19886464

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1$

素因数の和:100

約数の個数: 128

約数和(自身を含む): 48837600

約数和(自身を除く): 28951136

約数列:

[1, 2, 4, 8, 13, 16, 17, 19, 26, 32, 34, 37, 38, 52, 64, 68, 74, 76, 104, 128, 136, 148, 152, 208, 221, 247, 272, 296, 304, 323, 416, 442, 481, 494, 544, 592, 608, 629, 646, 703, 832, 884, 962, 988, 1088, 1184, 1216, 1258, 1292, 1406, 1664, 1768, 1924, 1976, 2176, 2368, 2432, 2516, 2584, 2812, 3536, 3848, 3952, 4199, 4736, 5032, 5168, 5624, 7072, 7696, 7904, 8177, 8398, 9139, 10064, 10336, 11248, 11951, 14144, 15392, 15808, 16354, 16796, 18278, 20128, 20672, 22496, 23902, 28288, 30784, 31616, 32708, 33592, 36556, 40256, 41344, 44992, 47804, 61568, 65416, 67184, 73112, 80512, 89984, 95608, 130832, 134368, 146224, 155363, 191216, 261664, 268736, 292448, 310726, 382432, 523328, 537472, 584896, 621452, 764864, 1046656, 1169792, 1242904, 1529728, 2485808, 4971616, 9943232, 19886464]

約数ペア:

[(1, 19886464), (2, 9943232), (4, 4971616), (8, 2485808), (13, 1529728), (16, 1242904), (17, 1169792), (19, 1046656), (26, 764864), (32, 621452), (34, 584896), (37, 537472), (38, 523328), (52, 382432), (64, 310726), (68, 292448), (74, 268736), (76, 261664), (104, 191216), (128, 155363), (136, 146224), (148, 134368), (152, 130832), (208, 95608), (221, 89984), (247, 80512), (272, 73112), (296, 67184), (304, 65416), (323, 61568), (416, 47804), (442, 44992), (481, 41344), (494, 40256), (544, 36556), (592, 33592), (608, 32708), (629, 31616), (646, 30784), (703, 28288), (832, 23902), (884, 22496), (962, 20672), (988, 20128), (1088, 18278), (1184, 16796), (1216, 16354), (1258, 15808), (1292, 15392), (1406, 14144), (1664, 11951), (1768, 11248), (1924, 10336), (1976, 10064), (2176, 9139), (2368, 8398), (2432, 8177), (2516, 7904), (2584, 7696), (2812, 7072), (3536, 5624), (3848, 5168), (3952, 5032), (4199, 4736)]