21213960

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{10399}}^1$

素因数の和:10430

約数の個数: 64

約数和(自身を含む): 67392000

約数和(自身を除く): 46178040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 680, 1020, 2040, 10399, 20798, 31197, 41596, 51995, 62394, 83192, 103990, 124788, 155985, 176783, 207980, 249576, 311970, 353566, 415960, 530349, 623940, 707132, 883915, 1060698, 1247880, 1414264, 1767830, 2121396, 2651745, 3535660, 4242792, 5303490, 7071320, 10606980, 21213960]

約数ペア:

[(1, 21213960), (2, 10606980), (3, 7071320), (4, 5303490), (5, 4242792), (6, 3535660), (8, 2651745), (10, 2121396), (12, 1767830), (15, 1414264), (17, 1247880), (20, 1060698), (24, 883915), (30, 707132), (34, 623940), (40, 530349), (51, 415960), (60, 353566), (68, 311970), (85, 249576), (102, 207980), (120, 176783), (136, 155985), (170, 124788), (204, 103990), (255, 83192), (340, 62394), (408, 51995), (510, 41596), (680, 31197), (1020, 20798), (2040, 10399)]