61781980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{293}}^1\times {\mathrm{811}}^1$

素因数の和:1126

約数の個数: 48

約数和(自身を含む): 140372064

約数和(自身を除く): 78590084

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 293, 586, 811, 1172, 1465, 1622, 2930, 3244, 3809, 4055, 5860, 7618, 8110, 10543, 15236, 16220, 19045, 21086, 38090, 42172, 52715, 76180, 105430, 210860, 237623, 475246, 950492, 1188115, 2376230, 3089099, 4752460, 6178198, 12356396, 15445495, 30890990, 61781980]

約数ペア:

[(1, 61781980), (2, 30890990), (4, 15445495), (5, 12356396), (10, 6178198), (13, 4752460), (20, 3089099), (26, 2376230), (52, 1188115), (65, 950492), (130, 475246), (260, 237623), (293, 210860), (586, 105430), (811, 76180), (1172, 52715), (1465, 42172), (1622, 38090), (2930, 21086), (3244, 19045), (3809, 16220), (4055, 15236), (5860, 10543), (7618, 8110)]