20639387020

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{137}}^1\times {\mathrm{21961}}^1$

素因数の和:22128

約数の個数: 96

約数和(自身を含む): 50916700800

約数和(自身を除く): 30277313780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 137, 140, 196, 245, 274, 343, 490, 548, 685, 686, 959, 980, 1370, 1372, 1715, 1918, 2740, 3430, 3836, 4795, 6713, 6860, 9590, 13426, 19180, 21961, 26852, 33565, 43922, 46991, 67130, 87844, 93982, 109805, 134260, 153727, 187964, 219610, 234955, 307454, 439220, 469910, 614908, 768635, 939820, 1076089, 1537270, 2152178, 3008657, 3074540, 4304356, 5380445, 6017314, 7532623, 10760890, 12034628, 15043285, 15065246, 21060599, 21521780, 30086570, 30130492, 37663115, 42121198, 60173140, 75326230, 84242396, 105302995, 147424193, 150652460, 210605990, 294848386, 421211980, 589696772, 737120965, 1031969351, 1474241930, 2063938702, 2948483860, 4127877404, 5159846755, 10319693510, 20639387020]

約数ペア:

[(1, 20639387020), (2, 10319693510), (4, 5159846755), (5, 4127877404), (7, 2948483860), (10, 2063938702), (14, 1474241930), (20, 1031969351), (28, 737120965), (35, 589696772), (49, 421211980), (70, 294848386), (98, 210605990), (137, 150652460), (140, 147424193), (196, 105302995), (245, 84242396), (274, 75326230), (343, 60173140), (490, 42121198), (548, 37663115), (685, 30130492), (686, 30086570), (959, 21521780), (980, 21060599), (1370, 15065246), (1372, 15043285), (1715, 12034628), (1918, 10760890), (2740, 7532623), (3430, 6017314), (3836, 5380445), (4795, 4304356), (6713, 3074540), (6860, 3008657), (9590, 2152178), (13426, 1537270), (19180, 1076089), (21961, 939820), (26852, 768635), (33565, 614908), (43922, 469910), (46991, 439220), (67130, 307454), (87844, 234955), (93982, 219610), (109805, 187964), (134260, 153727)]