19290680

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{331}}^1$

素因数の和:420

約数の個数: 64

約数和(自身を含む): 45895680

約数和(自身を除く): 26605000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 47, 62, 94, 124, 155, 188, 235, 248, 310, 331, 376, 470, 620, 662, 940, 1240, 1324, 1457, 1655, 1880, 2648, 2914, 3310, 5828, 6620, 7285, 10261, 11656, 13240, 14570, 15557, 20522, 29140, 31114, 41044, 51305, 58280, 62228, 77785, 82088, 102610, 124456, 155570, 205220, 311140, 410440, 482267, 622280, 964534, 1929068, 2411335, 3858136, 4822670, 9645340, 19290680]

約数ペア:

[(1, 19290680), (2, 9645340), (4, 4822670), (5, 3858136), (8, 2411335), (10, 1929068), (20, 964534), (31, 622280), (40, 482267), (47, 410440), (62, 311140), (94, 205220), (124, 155570), (155, 124456), (188, 102610), (235, 82088), (248, 77785), (310, 62228), (331, 58280), (376, 51305), (470, 41044), (620, 31114), (662, 29140), (940, 20522), (1240, 15557), (1324, 14570), (1457, 13240), (1655, 11656), (1880, 10261), (2648, 7285), (2914, 6620), (3310, 5828)]