65878100

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{269}}^1$

素因数の和:393

約数の個数: 72

約数和(自身を含む): 149990400

約数和(自身を除く): 84112300

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 79, 100, 124, 155, 158, 269, 310, 316, 395, 538, 620, 775, 790, 1076, 1345, 1550, 1580, 1975, 2449, 2690, 3100, 3950, 4898, 5380, 6725, 7900, 8339, 9796, 12245, 13450, 16678, 21251, 24490, 26900, 33356, 41695, 42502, 48980, 61225, 83390, 85004, 106255, 122450, 166780, 208475, 212510, 244900, 416950, 425020, 531275, 658781, 833900, 1062550, 1317562, 2125100, 2635124, 3293905, 6587810, 13175620, 16469525, 32939050, 65878100]

約数ペア:

[(1, 65878100), (2, 32939050), (4, 16469525), (5, 13175620), (10, 6587810), (20, 3293905), (25, 2635124), (31, 2125100), (50, 1317562), (62, 1062550), (79, 833900), (100, 658781), (124, 531275), (155, 425020), (158, 416950), (269, 244900), (310, 212510), (316, 208475), (395, 166780), (538, 122450), (620, 106255), (775, 85004), (790, 83390), (1076, 61225), (1345, 48980), (1550, 42502), (1580, 41695), (1975, 33356), (2449, 26900), (2690, 24490), (3100, 21251), (3950, 16678), (4898, 13450), (5380, 12245), (6725, 9796), (7900, 8339)]