4890980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{211}}^1$

素因数の和:300

約数の個数: 48

約数和(自身を含む): 11040960

約数和(自身を除く): 6149980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 61, 76, 95, 122, 190, 211, 244, 305, 380, 422, 610, 844, 1055, 1159, 1220, 2110, 2318, 4009, 4220, 4636, 5795, 8018, 11590, 12871, 16036, 20045, 23180, 25742, 40090, 51484, 64355, 80180, 128710, 244549, 257420, 489098, 978196, 1222745, 2445490, 4890980]

約数ペア:

[(1, 4890980), (2, 2445490), (4, 1222745), (5, 978196), (10, 489098), (19, 257420), (20, 244549), (38, 128710), (61, 80180), (76, 64355), (95, 51484), (122, 40090), (190, 25742), (211, 23180), (244, 20045), (305, 16036), (380, 12871), (422, 11590), (610, 8018), (844, 5795), (1055, 4636), (1159, 4220), (1220, 4009), (2110, 2318)]