19813960

素因数分解:

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

素因数の和:119

約数の個数: 96

約数和(自身を含む): 50169600

約数和(自身を除く): 30355640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 29, 31, 38, 40, 58, 62, 76, 95, 116, 124, 145, 152, 155, 190, 232, 248, 290, 310, 380, 551, 580, 589, 620, 760, 841, 899, 1102, 1160, 1178, 1240, 1682, 1798, 2204, 2356, 2755, 2945, 3364, 3596, 4205, 4408, 4495, 4712, 5510, 5890, 6728, 7192, 8410, 8990, 11020, 11780, 15979, 16820, 17081, 17980, 22040, 23560, 26071, 31958, 33640, 34162, 35960, 52142, 63916, 68324, 79895, 85405, 104284, 127832, 130355, 136648, 159790, 170810, 208568, 260710, 319580, 341620, 495349, 521420, 639160, 683240, 990698, 1042840, 1981396, 2476745, 3962792, 4953490, 9906980, 19813960]

約数ペア:

[(1, 19813960), (2, 9906980), (4, 4953490), (5, 3962792), (8, 2476745), (10, 1981396), (19, 1042840), (20, 990698), (29, 683240), (31, 639160), (38, 521420), (40, 495349), (58, 341620), (62, 319580), (76, 260710), (95, 208568), (116, 170810), (124, 159790), (145, 136648), (152, 130355), (155, 127832), (190, 104284), (232, 85405), (248, 79895), (290, 68324), (310, 63916), (380, 52142), (551, 35960), (580, 34162), (589, 33640), (620, 31958), (760, 26071), (841, 23560), (899, 22040), (1102, 17980), (1160, 17081), (1178, 16820), (1240, 15979), (1682, 11780), (1798, 11020), (2204, 8990), (2356, 8410), (2755, 7192), (2945, 6728), (3364, 5890), (3596, 5510), (4205, 4712), (4408, 4495)]