81575780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{2593}}^1$

素因数の和:2637

約数の個数: 72

約数和(自身を含む): 202861176

約数和(自身を除く): 121285396

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 121, 130, 143, 220, 242, 260, 286, 484, 572, 605, 715, 1210, 1430, 1573, 2420, 2593, 2860, 3146, 5186, 6292, 7865, 10372, 12965, 15730, 25930, 28523, 31460, 33709, 51860, 57046, 67418, 114092, 134836, 142615, 168545, 285230, 313753, 337090, 370799, 570460, 627506, 674180, 741598, 1255012, 1483196, 1568765, 1853995, 3137530, 3707990, 4078789, 6275060, 7415980, 8157578, 16315156, 20393945, 40787890, 81575780]

約数ペア:

[(1, 81575780), (2, 40787890), (4, 20393945), (5, 16315156), (10, 8157578), (11, 7415980), (13, 6275060), (20, 4078789), (22, 3707990), (26, 3137530), (44, 1853995), (52, 1568765), (55, 1483196), (65, 1255012), (110, 741598), (121, 674180), (130, 627506), (143, 570460), (220, 370799), (242, 337090), (260, 313753), (286, 285230), (484, 168545), (572, 142615), (605, 134836), (715, 114092), (1210, 67418), (1430, 57046), (1573, 51860), (2420, 33709), (2593, 31460), (2860, 28523), (3146, 25930), (5186, 15730), (6292, 12965), (7865, 10372)]