257581480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^2\times {\mathrm{31}}^1$

素因数の和:132

約数の個数: 192

約数和(自身を含む): 702374400

約数和(自身を除く): 444792920

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 29, 31, 38, 40, 52, 58, 62, 65, 76, 95, 104, 116, 124, 130, 145, 152, 155, 190, 232, 247, 248, 260, 290, 310, 377, 380, 403, 494, 520, 551, 580, 589, 620, 754, 760, 806, 841, 899, 988, 1102, 1160, 1178, 1235, 1240, 1508, 1612, 1682, 1798, 1885, 1976, 2015, 2204, 2356, 2470, 2755, 2945, 3016, 3224, 3364, 3596, 3770, 4030, 4205, 4408, 4495, 4712, 4940, 5510, 5890, 6728, 7163, 7192, 7540, 7657, 8060, 8410, 8990, 9880, 10933, 11020, 11687, 11780, 14326, 15080, 15314, 15979, 16120, 16820, 17081, 17980, 21866, 22040, 23374, 23560, 26071, 28652, 30628, 31958, 33640, 34162, 35815, 35960, 38285, 43732, 46748, 52142, 54665, 57304, 58435, 61256, 63916, 68324, 71630, 76570, 79895, 85405, 87464, 93496, 104284, 109330, 116870, 127832, 130355, 136648, 143260, 153140, 159790, 170810, 207727, 208568, 218660, 222053, 233740, 260710, 286520, 306280, 319580, 338923, 341620, 415454, 437320, 444106, 467480, 495349, 521420, 639160, 677846, 683240, 830908, 888212, 990698, 1038635, 1042840, 1110265, 1355692, 1661816, 1694615, 1776424, 1981396, 2077270, 2220530, 2476745, 2711384, 3389230, 3962792, 4154540, 4441060, 4953490, 6439537, 6778460, 8309080, 8882120, 9906980, 12879074, 13556920, 19813960, 25758148, 32197685, 51516296, 64395370, 128790740, 257581480]

約数ペア:

[(1, 257581480), (2, 128790740), (4, 64395370), (5, 51516296), (8, 32197685), (10, 25758148), (13, 19813960), (19, 13556920), (20, 12879074), (26, 9906980), (29, 8882120), (31, 8309080), (38, 6778460), (40, 6439537), (52, 4953490), (58, 4441060), (62, 4154540), (65, 3962792), (76, 3389230), (95, 2711384), (104, 2476745), (116, 2220530), (124, 2077270), (130, 1981396), (145, 1776424), (152, 1694615), (155, 1661816), (190, 1355692), (232, 1110265), (247, 1042840), (248, 1038635), (260, 990698), (290, 888212), (310, 830908), (377, 683240), (380, 677846), (403, 639160), (494, 521420), (520, 495349), (551, 467480), (580, 444106), (589, 437320), (620, 415454), (754, 341620), (760, 338923), (806, 319580), (841, 306280), (899, 286520), (988, 260710), (1102, 233740), (1160, 222053), (1178, 218660), (1235, 208568), (1240, 207727), (1508, 170810), (1612, 159790), (1682, 153140), (1798, 143260), (1885, 136648), (1976, 130355), (2015, 127832), (2204, 116870), (2356, 109330), (2470, 104284), (2755, 93496), (2945, 87464), (3016, 85405), (3224, 79895), (3364, 76570), (3596, 71630), (3770, 68324), (4030, 63916), (4205, 61256), (4408, 58435), (4495, 57304), (4712, 54665), (4940, 52142), (5510, 46748), (5890, 43732), (6728, 38285), (7163, 35960), (7192, 35815), (7540, 34162), (7657, 33640), (8060, 31958), (8410, 30628), (8990, 28652), (9880, 26071), (10933, 23560), (11020, 23374), (11687, 22040), (11780, 21866), (14326, 17980), (15080, 17081), (15314, 16820), (15979, 16120)]