19858520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^3\times {\mathrm{373}}^1$

素因数の和:417

約数の個数: 64

約数和(自身を含む): 49278240

約数和(自身を除く): 29419720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 373, 440, 484, 605, 746, 968, 1210, 1331, 1492, 1865, 2420, 2662, 2984, 3730, 4103, 4840, 5324, 6655, 7460, 8206, 10648, 13310, 14920, 16412, 20515, 26620, 32824, 41030, 45133, 53240, 82060, 90266, 164120, 180532, 225665, 361064, 451330, 496463, 902660, 992926, 1805320, 1985852, 2482315, 3971704, 4964630, 9929260, 19858520]

約数ペア:

[(1, 19858520), (2, 9929260), (4, 4964630), (5, 3971704), (8, 2482315), (10, 1985852), (11, 1805320), (20, 992926), (22, 902660), (40, 496463), (44, 451330), (55, 361064), (88, 225665), (110, 180532), (121, 164120), (220, 90266), (242, 82060), (373, 53240), (440, 45133), (484, 41030), (605, 32824), (746, 26620), (968, 20515), (1210, 16412), (1331, 14920), (1492, 13310), (1865, 10648), (2420, 8206), (2662, 7460), (2984, 6655), (3730, 5324), (4103, 4840)]