81384980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{3511}}^1$

素因数の和:3600

約数の個数: 48

約数和(自身を含む): 182904960

約数和(自身を除く): 101519980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 61, 76, 95, 122, 190, 244, 305, 380, 610, 1159, 1220, 2318, 3511, 4636, 5795, 7022, 11590, 14044, 17555, 23180, 35110, 66709, 70220, 133418, 214171, 266836, 333545, 428342, 667090, 856684, 1070855, 1334180, 2141710, 4069249, 4283420, 8138498, 16276996, 20346245, 40692490, 81384980]

約数ペア:

[(1, 81384980), (2, 40692490), (4, 20346245), (5, 16276996), (10, 8138498), (19, 4283420), (20, 4069249), (38, 2141710), (61, 1334180), (76, 1070855), (95, 856684), (122, 667090), (190, 428342), (244, 333545), (305, 266836), (380, 214171), (610, 133418), (1159, 70220), (1220, 66709), (2318, 35110), (3511, 23180), (4636, 17555), (5795, 14044), (7022, 11590)]