81512860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{2591}}^1$

素因数の和:2635

約数の個数: 72

約数和(自身を含む): 202704768

約数和(自身を除く): 121191908

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, 2591, 2860, 3146, 5182, 6292, 7865, 10364, 12955, 15730, 25910, 28501, 31460, 33683, 51820, 57002, 67366, 114004, 134732, 142505, 168415, 285010, 313511, 336830, 370513, 570020, 627022, 673660, 741026, 1254044, 1482052, 1567555, 1852565, 3135110, 3705130, 4075643, 6270220, 7410260, 8151286, 16302572, 20378215, 40756430, 81512860]

約数ペア:

[(1, 81512860), (2, 40756430), (4, 20378215), (5, 16302572), (10, 8151286), (11, 7410260), (13, 6270220), (20, 4075643), (22, 3705130), (26, 3135110), (44, 1852565), (52, 1567555), (55, 1482052), (65, 1254044), (110, 741026), (121, 673660), (130, 627022), (143, 570020), (220, 370513), (242, 336830), (260, 313511), (286, 285010), (484, 168415), (572, 142505), (605, 134732), (715, 114004), (1210, 67366), (1430, 57002), (1573, 51820), (2420, 33683), (2591, 31460), (2860, 28501), (3146, 25910), (5182, 15730), (6292, 12955), (7865, 10364)]