21348704

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1$

素因数の和:152

約数の個数: 96

約数和(自身を含む): 49603680

約数和(自身を除く): 28254976

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 37, 38, 52, 73, 74, 76, 104, 146, 148, 152, 208, 247, 292, 296, 304, 416, 481, 494, 584, 592, 608, 703, 949, 962, 988, 1168, 1184, 1387, 1406, 1898, 1924, 1976, 2336, 2701, 2774, 2812, 3796, 3848, 3952, 5402, 5548, 5624, 7592, 7696, 7904, 9139, 10804, 11096, 11248, 15184, 15392, 18031, 18278, 21608, 22192, 22496, 30368, 35113, 36062, 36556, 43216, 44384, 51319, 70226, 72124, 73112, 86432, 102638, 140452, 144248, 146224, 205276, 280904, 288496, 292448, 410552, 561808, 576992, 667147, 821104, 1123616, 1334294, 1642208, 2668588, 5337176, 10674352, 21348704]

約数ペア:

[(1, 21348704), (2, 10674352), (4, 5337176), (8, 2668588), (13, 1642208), (16, 1334294), (19, 1123616), (26, 821104), (32, 667147), (37, 576992), (38, 561808), (52, 410552), (73, 292448), (74, 288496), (76, 280904), (104, 205276), (146, 146224), (148, 144248), (152, 140452), (208, 102638), (247, 86432), (292, 73112), (296, 72124), (304, 70226), (416, 51319), (481, 44384), (494, 43216), (584, 36556), (592, 36062), (608, 35113), (703, 30368), (949, 22496), (962, 22192), (988, 21608), (1168, 18278), (1184, 18031), (1387, 15392), (1406, 15184), (1898, 11248), (1924, 11096), (1976, 10804), (2336, 9139), (2701, 7904), (2774, 7696), (2812, 7592), (3796, 5624), (3848, 5548), (3952, 5402)]