128790740

素因数分解:

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

素因数の和:130

約数の個数: 144

約数和(自身を含む): 327774720

約数和(自身を除く): 198983980

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 29, 31, 38, 52, 58, 62, 65, 76, 95, 116, 124, 130, 145, 155, 190, 247, 260, 290, 310, 377, 380, 403, 494, 551, 580, 589, 620, 754, 806, 841, 899, 988, 1102, 1178, 1235, 1508, 1612, 1682, 1798, 1885, 2015, 2204, 2356, 2470, 2755, 2945, 3364, 3596, 3770, 4030, 4205, 4495, 4940, 5510, 5890, 7163, 7540, 7657, 8060, 8410, 8990, 10933, 11020, 11687, 11780, 14326, 15314, 15979, 16820, 17081, 17980, 21866, 23374, 26071, 28652, 30628, 31958, 34162, 35815, 38285, 43732, 46748, 52142, 54665, 58435, 63916, 68324, 71630, 76570, 79895, 85405, 104284, 109330, 116870, 130355, 143260, 153140, 159790, 170810, 207727, 218660, 222053, 233740, 260710, 319580, 338923, 341620, 415454, 444106, 495349, 521420, 677846, 830908, 888212, 990698, 1038635, 1110265, 1355692, 1694615, 1981396, 2077270, 2220530, 2476745, 3389230, 4154540, 4441060, 4953490, 6439537, 6778460, 9906980, 12879074, 25758148, 32197685, 64395370, 128790740]

約数ペア:

[(1, 128790740), (2, 64395370), (4, 32197685), (5, 25758148), (10, 12879074), (13, 9906980), (19, 6778460), (20, 6439537), (26, 4953490), (29, 4441060), (31, 4154540), (38, 3389230), (52, 2476745), (58, 2220530), (62, 2077270), (65, 1981396), (76, 1694615), (95, 1355692), (116, 1110265), (124, 1038635), (130, 990698), (145, 888212), (155, 830908), (190, 677846), (247, 521420), (260, 495349), (290, 444106), (310, 415454), (377, 341620), (380, 338923), (403, 319580), (494, 260710), (551, 233740), (580, 222053), (589, 218660), (620, 207727), (754, 170810), (806, 159790), (841, 153140), (899, 143260), (988, 130355), (1102, 116870), (1178, 109330), (1235, 104284), (1508, 85405), (1612, 79895), (1682, 76570), (1798, 71630), (1885, 68324), (2015, 63916), (2204, 58435), (2356, 54665), (2470, 52142), (2755, 46748), (2945, 43732), (3364, 38285), (3596, 35815), (3770, 34162), (4030, 31958), (4205, 30628), (4495, 28652), (4940, 26071), (5510, 23374), (5890, 21866), (7163, 17980), (7540, 17081), (7657, 16820), (8060, 15979), (8410, 15314), (8990, 14326), (10933, 11780), (11020, 11687)]