20279584

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^2$

素因数の和:134

約数の個数: 72

約数和(自身を含む): 45590580

約数和(自身を除く): 25310996

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 32, 41, 52, 58, 82, 104, 116, 164, 208, 232, 328, 377, 416, 464, 533, 656, 754, 928, 1066, 1189, 1312, 1508, 1681, 2132, 2378, 3016, 3362, 4264, 4756, 6032, 6724, 8528, 9512, 12064, 13448, 15457, 17056, 19024, 21853, 26896, 30914, 38048, 43706, 48749, 53792, 61828, 87412, 97498, 123656, 174824, 194996, 247312, 349648, 389992, 494624, 633737, 699296, 779984, 1267474, 1559968, 2534948, 5069896, 10139792, 20279584]

約数ペア:

[(1, 20279584), (2, 10139792), (4, 5069896), (8, 2534948), (13, 1559968), (16, 1267474), (26, 779984), (29, 699296), (32, 633737), (41, 494624), (52, 389992), (58, 349648), (82, 247312), (104, 194996), (116, 174824), (164, 123656), (208, 97498), (232, 87412), (328, 61828), (377, 53792), (416, 48749), (464, 43706), (533, 38048), (656, 30914), (754, 26896), (928, 21853), (1066, 19024), (1189, 17056), (1312, 15457), (1508, 13448), (1681, 12064), (2132, 9512), (2378, 8528), (3016, 6724), (3362, 6032), (4264, 4756)]