19681980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1471}}^1$

素因数の和:1706

約数の個数: 48

約数和(自身を含む): 55394304

約数和(自身を除く): 35712324

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 223, 446, 669, 892, 1115, 1338, 1471, 2230, 2676, 2942, 3345, 4413, 4460, 5884, 6690, 7355, 8826, 13380, 14710, 17652, 22065, 29420, 44130, 88260, 328033, 656066, 984099, 1312132, 1640165, 1968198, 3280330, 3936396, 4920495, 6560660, 9840990, 19681980]

約数ペア:

[(1, 19681980), (2, 9840990), (3, 6560660), (4, 4920495), (5, 3936396), (6, 3280330), (10, 1968198), (12, 1640165), (15, 1312132), (20, 984099), (30, 656066), (60, 328033), (223, 88260), (446, 44130), (669, 29420), (892, 22065), (1115, 17652), (1338, 14710), (1471, 13380), (2230, 8826), (2676, 7355), (2942, 6690), (3345, 5884), (4413, 4460)]