1617980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1$

素因数の和:163

約数の個数: 72

約数和(自身を含む): 4290048

約数和(自身を除く): 2672068

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 127, 130, 140, 182, 196, 245, 254, 260, 364, 455, 490, 508, 635, 637, 889, 910, 980, 1270, 1274, 1651, 1778, 1820, 2540, 2548, 3185, 3302, 3556, 4445, 6223, 6370, 6604, 8255, 8890, 11557, 12446, 12740, 16510, 17780, 23114, 24892, 31115, 33020, 46228, 57785, 62230, 80899, 115570, 124460, 161798, 231140, 323596, 404495, 808990, 1617980]

約数ペア:

[(1, 1617980), (2, 808990), (4, 404495), (5, 323596), (7, 231140), (10, 161798), (13, 124460), (14, 115570), (20, 80899), (26, 62230), (28, 57785), (35, 46228), (49, 33020), (52, 31115), (65, 24892), (70, 23114), (91, 17780), (98, 16510), (127, 12740), (130, 12446), (140, 11557), (182, 8890), (196, 8255), (245, 6604), (254, 6370), (260, 6223), (364, 4445), (455, 3556), (490, 3302), (508, 3185), (635, 2548), (637, 2540), (889, 1820), (910, 1778), (980, 1651), (1270, 1274)]