19927570

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1$

素因数の和:235

約数の個数: 64

約数和(自身を含む): 41803776

約数和(自身を除く): 21876206

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 71, 85, 127, 130, 142, 170, 221, 254, 355, 442, 635, 710, 923, 1105, 1207, 1270, 1651, 1846, 2159, 2210, 2414, 3302, 4318, 4615, 6035, 8255, 9017, 9230, 10795, 12070, 15691, 16510, 18034, 21590, 28067, 31382, 45085, 56134, 78455, 90170, 117221, 140335, 153289, 156910, 234442, 280670, 306578, 586105, 766445, 1172210, 1532890, 1992757, 3985514, 9963785, 19927570]

約数ペア:

[(1, 19927570), (2, 9963785), (5, 3985514), (10, 1992757), (13, 1532890), (17, 1172210), (26, 766445), (34, 586105), (65, 306578), (71, 280670), (85, 234442), (127, 156910), (130, 153289), (142, 140335), (170, 117221), (221, 90170), (254, 78455), (355, 56134), (442, 45085), (635, 31382), (710, 28067), (923, 21590), (1105, 18034), (1207, 16510), (1270, 15691), (1651, 12070), (1846, 10795), (2159, 9230), (2210, 9017), (2414, 8255), (3302, 6035), (4318, 4615)]