20187488980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1\times {\mathrm{8581}}^1$

素因数の和:8801

約数の個数: 96

約数和(自身を含む): 46021489920

約数和(自身を除く): 25834000940

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 151, 164, 190, 205, 302, 380, 410, 604, 755, 779, 820, 1510, 1558, 2869, 3020, 3116, 3895, 5738, 6191, 7790, 8581, 11476, 12382, 14345, 15580, 17162, 24764, 28690, 30955, 34324, 42905, 57380, 61910, 85810, 117629, 123820, 163039, 171620, 235258, 326078, 351821, 470516, 588145, 652156, 703642, 815195, 1176290, 1295731, 1407284, 1630390, 1759105, 2352580, 2591462, 3260780, 3518210, 5182924, 6478655, 6684599, 7036420, 12957310, 13369198, 24618889, 25914620, 26738396, 33422995, 49237778, 53124971, 66845990, 98475556, 106249942, 123094445, 133691980, 212499884, 246188890, 265624855, 492377780, 531249710, 1009374449, 1062499420, 2018748898, 4037497796, 5046872245, 10093744490, 20187488980]

約数ペア:

[(1, 20187488980), (2, 10093744490), (4, 5046872245), (5, 4037497796), (10, 2018748898), (19, 1062499420), (20, 1009374449), (38, 531249710), (41, 492377780), (76, 265624855), (82, 246188890), (95, 212499884), (151, 133691980), (164, 123094445), (190, 106249942), (205, 98475556), (302, 66845990), (380, 53124971), (410, 49237778), (604, 33422995), (755, 26738396), (779, 25914620), (820, 24618889), (1510, 13369198), (1558, 12957310), (2869, 7036420), (3020, 6684599), (3116, 6478655), (3895, 5182924), (5738, 3518210), (6191, 3260780), (7790, 2591462), (8581, 2352580), (11476, 1759105), (12382, 1630390), (14345, 1407284), (15580, 1295731), (17162, 1176290), (24764, 815195), (28690, 703642), (30955, 652156), (34324, 588145), (42905, 470516), (57380, 351821), (61910, 326078), (85810, 235258), (117629, 171620), (123820, 163039)]