21003450

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{10771}}^1$

素因数の和:10799

約数の個数: 48

約数和(自身を含む): 56100576

約数和(自身を除く): 35097126

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, 10771, 21542, 32313, 53855, 64626, 107710, 140023, 161565, 269275, 280046, 323130, 420069, 538550, 700115, 807825, 840138, 1400230, 1615650, 2100345, 3500575, 4200690, 7001150, 10501725, 21003450]

約数ペア:

[(1, 21003450), (2, 10501725), (3, 7001150), (5, 4200690), (6, 3500575), (10, 2100345), (13, 1615650), (15, 1400230), (25, 840138), (26, 807825), (30, 700115), (39, 538550), (50, 420069), (65, 323130), (75, 280046), (78, 269275), (130, 161565), (150, 140023), (195, 107710), (325, 64626), (390, 53855), (650, 32313), (975, 21542), (1950, 10771)]