21041670

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{331}}^1$

素因数の和:517

約数の個数: 64

約数和(自身を含む): 54883584

約数和(自身を除く): 33841914

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 163, 195, 326, 331, 390, 489, 662, 815, 978, 993, 1630, 1655, 1986, 2119, 2445, 3310, 4238, 4303, 4890, 4965, 6357, 8606, 9930, 10595, 12714, 12909, 21190, 21515, 25818, 31785, 43030, 53953, 63570, 64545, 107906, 129090, 161859, 269765, 323718, 539530, 701389, 809295, 1402778, 1618590, 2104167, 3506945, 4208334, 7013890, 10520835, 21041670]

約数ペア:

[(1, 21041670), (2, 10520835), (3, 7013890), (5, 4208334), (6, 3506945), (10, 2104167), (13, 1618590), (15, 1402778), (26, 809295), (30, 701389), (39, 539530), (65, 323718), (78, 269765), (130, 161859), (163, 129090), (195, 107906), (326, 64545), (331, 63570), (390, 53953), (489, 43030), (662, 31785), (815, 25818), (978, 21515), (993, 21190), (1630, 12909), (1655, 12714), (1986, 10595), (2119, 9930), (2445, 8606), (3310, 6357), (4238, 4965), (4303, 4890)]