20015090640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{455717}}^1$

素因数の和:455797

約数の個数: 120

約数和(自身を含む): 68319419688

約数和(自身を除く): 48304329048

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 61, 72, 80, 90, 120, 122, 144, 180, 183, 240, 244, 305, 360, 366, 488, 549, 610, 720, 732, 915, 976, 1098, 1220, 1464, 1830, 2196, 2440, 2745, 2928, 3660, 4392, 4880, 5490, 7320, 8784, 10980, 14640, 21960, 43920, 455717, 911434, 1367151, 1822868, 2278585, 2734302, 3645736, 4101453, 4557170, 5468604, 6835755, 7291472, 8202906, 9114340, 10937208, 13671510, 16405812, 18228680, 20507265, 21874416, 27343020, 27798737, 32811624, 36457360, 41014530, 54686040, 55597474, 65623248, 82029060, 83396211, 109372080, 111194948, 138993685, 164058120, 166792422, 222389896, 250188633, 277987370, 328116240, 333584844, 416981055, 444779792, 500377266, 555974740, 667169688, 833962110, 1000754532, 1111949480, 1250943165, 1334339376, 1667924220, 2001509064, 2223898960, 2501886330, 3335848440, 4003018128, 5003772660, 6671696880, 10007545320, 20015090640]

約数ペア:

[(1, 20015090640), (2, 10007545320), (3, 6671696880), (4, 5003772660), (5, 4003018128), (6, 3335848440), (8, 2501886330), (9, 2223898960), (10, 2001509064), (12, 1667924220), (15, 1334339376), (16, 1250943165), (18, 1111949480), (20, 1000754532), (24, 833962110), (30, 667169688), (36, 555974740), (40, 500377266), (45, 444779792), (48, 416981055), (60, 333584844), (61, 328116240), (72, 277987370), (80, 250188633), (90, 222389896), (120, 166792422), (122, 164058120), (144, 138993685), (180, 111194948), (183, 109372080), (240, 83396211), (244, 82029060), (305, 65623248), (360, 55597474), (366, 54686040), (488, 41014530), (549, 36457360), (610, 32811624), (720, 27798737), (732, 27343020), (915, 21874416), (976, 20507265), (1098, 18228680), (1220, 16405812), (1464, 13671510), (1830, 10937208), (2196, 9114340), (2440, 8202906), (2745, 7291472), (2928, 6835755), (3660, 5468604), (4392, 4557170), (4880, 4101453), (5490, 3645736), (7320, 2734302), (8784, 2278585), (10980, 1822868), (14640, 1367151), (21960, 911434), (43920, 455717)]