20997480

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{3571}}^1$

素因数の和:3599

約数の個数: 96

約数和(自身を含む): 73297440

約数和(自身を除く): 52299960

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 84, 98, 105, 120, 140, 147, 168, 196, 210, 245, 280, 294, 392, 420, 490, 588, 735, 840, 980, 1176, 1470, 1960, 2940, 3571, 5880, 7142, 10713, 14284, 17855, 21426, 24997, 28568, 35710, 42852, 49994, 53565, 71420, 74991, 85704, 99988, 107130, 124985, 142840, 149982, 174979, 199976, 214260, 249970, 299964, 349958, 374955, 428520, 499940, 524937, 599928, 699916, 749910, 874895, 999880, 1049874, 1399832, 1499820, 1749790, 2099748, 2624685, 2999640, 3499580, 4199496, 5249370, 6999160, 10498740, 20997480]

約数ペア:

[(1, 20997480), (2, 10498740), (3, 6999160), (4, 5249370), (5, 4199496), (6, 3499580), (7, 2999640), (8, 2624685), (10, 2099748), (12, 1749790), (14, 1499820), (15, 1399832), (20, 1049874), (21, 999880), (24, 874895), (28, 749910), (30, 699916), (35, 599928), (40, 524937), (42, 499940), (49, 428520), (56, 374955), (60, 349958), (70, 299964), (84, 249970), (98, 214260), (105, 199976), (120, 174979), (140, 149982), (147, 142840), (168, 124985), (196, 107130), (210, 99988), (245, 85704), (280, 74991), (294, 71420), (392, 53565), (420, 49994), (490, 42852), (588, 35710), (735, 28568), (840, 24997), (980, 21426), (1176, 17855), (1470, 14284), (1960, 10713), (2940, 7142), (3571, 5880)]