20449650

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{10487}}^1$

素因数の和:10515

約数の個数: 48

約数和(自身を含む): 54621504

約数和(自身を除く): 34171854

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 130, 150, 195, 325, 390, 650, 975, 1950, 10487, 20974, 31461, 52435, 62922, 104870, 136331, 157305, 262175, 272662, 314610, 408993, 524350, 681655, 786525, 817986, 1363310, 1573050, 2044965, 3408275, 4089930, 6816550, 10224825, 20449650]

約数ペア:

[(1, 20449650), (2, 10224825), (3, 6816550), (5, 4089930), (6, 3408275), (10, 2044965), (13, 1573050), (15, 1363310), (25, 817986), (26, 786525), (30, 681655), (39, 524350), (50, 408993), (65, 314610), (75, 272662), (78, 262175), (130, 157305), (150, 136331), (195, 104870), (325, 62922), (390, 52435), (650, 31461), (975, 20974), (1950, 10487)]