19917248

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{647}}^1$

素因数の和:709

約数の個数: 56

約数和(自身を含む): 43781472

約数和(自身を除く): 23864224

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 37, 52, 64, 74, 104, 148, 208, 296, 416, 481, 592, 647, 832, 962, 1184, 1294, 1924, 2368, 2588, 3848, 5176, 7696, 8411, 10352, 15392, 16822, 20704, 23939, 30784, 33644, 41408, 47878, 67288, 95756, 134576, 191512, 269152, 311207, 383024, 538304, 622414, 766048, 1244828, 1532096, 2489656, 4979312, 9958624, 19917248]

約数ペア:

[(1, 19917248), (2, 9958624), (4, 4979312), (8, 2489656), (13, 1532096), (16, 1244828), (26, 766048), (32, 622414), (37, 538304), (52, 383024), (64, 311207), (74, 269152), (104, 191512), (148, 134576), (208, 95756), (296, 67288), (416, 47878), (481, 41408), (592, 33644), (647, 30784), (832, 23939), (962, 20704), (1184, 16822), (1294, 15392), (1924, 10352), (2368, 8411), (2588, 7696), (3848, 5176)]