2563990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{163}}^1$

素因数の和:205

約数の個数: 48

約数和(自身を含む): 5496624

約数和(自身を除く): 2932634

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 121, 130, 143, 163, 242, 286, 326, 605, 715, 815, 1210, 1430, 1573, 1630, 1793, 2119, 3146, 3586, 4238, 7865, 8965, 10595, 15730, 17930, 19723, 21190, 23309, 39446, 46618, 98615, 116545, 197230, 233090, 256399, 512798, 1281995, 2563990]

約数ペア:

[(1, 2563990), (2, 1281995), (5, 512798), (10, 256399), (11, 233090), (13, 197230), (22, 116545), (26, 98615), (55, 46618), (65, 39446), (110, 23309), (121, 21190), (130, 19723), (143, 17930), (163, 15730), (242, 10595), (286, 8965), (326, 7865), (605, 4238), (715, 3586), (815, 3146), (1210, 2119), (1430, 1793), (1573, 1630)]