20420320

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{179}}^1$

素因数の和:248

約数の個数: 96

約数和(自身を含む): 52254720

約数和(自身を除く): 31834400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 32, 40, 46, 62, 80, 92, 115, 124, 155, 160, 179, 184, 230, 248, 310, 358, 368, 460, 496, 620, 713, 716, 736, 895, 920, 992, 1240, 1426, 1432, 1790, 1840, 2480, 2852, 2864, 3565, 3580, 3680, 4117, 4960, 5549, 5704, 5728, 7130, 7160, 8234, 11098, 11408, 14260, 14320, 16468, 20585, 22196, 22816, 27745, 28520, 28640, 32936, 41170, 44392, 55490, 57040, 65872, 82340, 88784, 110980, 114080, 127627, 131744, 164680, 177568, 221960, 255254, 329360, 443920, 510508, 638135, 658720, 887840, 1021016, 1276270, 2042032, 2552540, 4084064, 5105080, 10210160, 20420320]

約数ペア:

[(1, 20420320), (2, 10210160), (4, 5105080), (5, 4084064), (8, 2552540), (10, 2042032), (16, 1276270), (20, 1021016), (23, 887840), (31, 658720), (32, 638135), (40, 510508), (46, 443920), (62, 329360), (80, 255254), (92, 221960), (115, 177568), (124, 164680), (155, 131744), (160, 127627), (179, 114080), (184, 110980), (230, 88784), (248, 82340), (310, 65872), (358, 57040), (368, 55490), (460, 44392), (496, 41170), (620, 32936), (713, 28640), (716, 28520), (736, 27745), (895, 22816), (920, 22196), (992, 20585), (1240, 16468), (1426, 14320), (1432, 14260), (1790, 11408), (1840, 11098), (2480, 8234), (2852, 7160), (2864, 7130), (3565, 5728), (3580, 5704), (3680, 5549), (4117, 4960)]