81025490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{269}}^1\times {\mathrm{331}}^1$

素因数の和:627

約数の個数: 64

約数和(自身を含む): 180714240

約数和(自身を除く): 99688750

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 269, 331, 455, 538, 662, 910, 1345, 1655, 1883, 2317, 2690, 3310, 3497, 3766, 4303, 4634, 6994, 8606, 9415, 11585, 17485, 18830, 21515, 23170, 24479, 30121, 34970, 43030, 48958, 60242, 89039, 122395, 150605, 178078, 244790, 301210, 445195, 623273, 890390, 1157507, 1246546, 2315014, 3116365, 5787535, 6232730, 8102549, 11575070, 16205098, 40512745, 81025490]

約数ペア:

[(1, 81025490), (2, 40512745), (5, 16205098), (7, 11575070), (10, 8102549), (13, 6232730), (14, 5787535), (26, 3116365), (35, 2315014), (65, 1246546), (70, 1157507), (91, 890390), (130, 623273), (182, 445195), (269, 301210), (331, 244790), (455, 178078), (538, 150605), (662, 122395), (910, 89039), (1345, 60242), (1655, 48958), (1883, 43030), (2317, 34970), (2690, 30121), (3310, 24479), (3497, 23170), (3766, 21515), (4303, 18830), (4634, 17485), (6994, 11585), (8606, 9415)]