20975073840

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{4161721}}^1$

素因数の和:4161747

約数の個数: 120

約数和(自身を含む): 80504350368

約数和(自身を除く): 59529276528

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 5040, 4161721, 8323442, 12485163, 16646884, 20808605, 24970326, 29132047, 33293768, 37455489, 41617210, 49940652, 58264094, 62425815, 66587536, 74910978, 83234420, 87396141, 99881304, 116528188, 124851630, 145660235, 149821956, 166468840, 174792282, 187277445, 199762608, 233056376, 249703260, 262188423, 291320470, 299643912, 332937680, 349584564, 374554890, 436980705, 466112752, 499406520, 524376846, 582640940, 599287824, 699169128, 749109780, 873961410, 998813040, 1048753692, 1165281880, 1310942115, 1398338256, 1498219560, 1747922820, 2097507384, 2330563760, 2621884230, 2996439120, 3495845640, 4195014768, 5243768460, 6991691280, 10487536920, 20975073840]

約数ペア:

[(1, 20975073840), (2, 10487536920), (3, 6991691280), (4, 5243768460), (5, 4195014768), (6, 3495845640), (7, 2996439120), (8, 2621884230), (9, 2330563760), (10, 2097507384), (12, 1747922820), (14, 1498219560), (15, 1398338256), (16, 1310942115), (18, 1165281880), (20, 1048753692), (21, 998813040), (24, 873961410), (28, 749109780), (30, 699169128), (35, 599287824), (36, 582640940), (40, 524376846), (42, 499406520), (45, 466112752), (48, 436980705), (56, 374554890), (60, 349584564), (63, 332937680), (70, 299643912), (72, 291320470), (80, 262188423), (84, 249703260), (90, 233056376), (105, 199762608), (112, 187277445), (120, 174792282), (126, 166468840), (140, 149821956), (144, 145660235), (168, 124851630), (180, 116528188), (210, 99881304), (240, 87396141), (252, 83234420), (280, 74910978), (315, 66587536), (336, 62425815), (360, 58264094), (420, 49940652), (504, 41617210), (560, 37455489), (630, 33293768), (720, 29132047), (840, 24970326), (1008, 20808605), (1260, 16646884), (1680, 12485163), (2520, 8323442), (5040, 4161721)]