81410212

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1$

素因数の和:221

約数の個数: 96

約数和(自身を含む): 176964480

約数和(自身を除く): 95554268

約数列:

[1, 2, 4, 13, 17, 19, 26, 34, 37, 38, 52, 68, 74, 76, 131, 148, 221, 247, 262, 323, 442, 481, 494, 524, 629, 646, 703, 884, 962, 988, 1258, 1292, 1406, 1703, 1924, 2227, 2489, 2516, 2812, 3406, 4199, 4454, 4847, 4978, 6812, 8177, 8398, 8908, 9139, 9694, 9956, 11951, 16354, 16796, 18278, 19388, 23902, 28951, 32357, 32708, 36556, 42313, 47804, 57902, 63011, 64714, 82399, 84626, 92093, 115804, 126022, 129428, 155363, 164798, 169252, 184186, 252044, 310726, 329596, 368372, 550069, 621452, 1071187, 1100138, 1197209, 1565581, 2142374, 2200276, 2394418, 3131162, 4284748, 4788836, 6262324, 20352553, 40705106, 81410212]

約数ペア:

[(1, 81410212), (2, 40705106), (4, 20352553), (13, 6262324), (17, 4788836), (19, 4284748), (26, 3131162), (34, 2394418), (37, 2200276), (38, 2142374), (52, 1565581), (68, 1197209), (74, 1100138), (76, 1071187), (131, 621452), (148, 550069), (221, 368372), (247, 329596), (262, 310726), (323, 252044), (442, 184186), (481, 169252), (494, 164798), (524, 155363), (629, 129428), (646, 126022), (703, 115804), (884, 92093), (962, 84626), (988, 82399), (1258, 64714), (1292, 63011), (1406, 57902), (1703, 47804), (1924, 42313), (2227, 36556), (2489, 32708), (2516, 32357), (2812, 28951), (3406, 23902), (4199, 19388), (4454, 18278), (4847, 16796), (4978, 16354), (6812, 11951), (8177, 9956), (8398, 9694), (8908, 9139)]