21408400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1$

素因数の和:233

約数の個数: 120

約数和(自身を含む): 58121280

約数和(自身を除く): 36712880

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 25, 26, 40, 46, 50, 52, 65, 80, 92, 100, 104, 115, 130, 179, 184, 200, 208, 230, 260, 299, 325, 358, 368, 400, 460, 520, 575, 598, 650, 716, 895, 920, 1040, 1150, 1196, 1300, 1432, 1495, 1790, 1840, 2300, 2327, 2392, 2600, 2864, 2990, 3580, 4117, 4475, 4600, 4654, 4784, 5200, 5980, 7160, 7475, 8234, 8950, 9200, 9308, 11635, 11960, 14320, 14950, 16468, 17900, 18616, 20585, 23270, 23920, 29900, 32936, 35800, 37232, 41170, 46540, 53521, 58175, 59800, 65872, 71600, 82340, 93080, 102925, 107042, 116350, 119600, 164680, 186160, 205850, 214084, 232700, 267605, 329360, 411700, 428168, 465400, 535210, 823400, 856336, 930800, 1070420, 1338025, 1646800, 2140840, 2676050, 4281680, 5352100, 10704200, 21408400]

約数ペア:

[(1, 21408400), (2, 10704200), (4, 5352100), (5, 4281680), (8, 2676050), (10, 2140840), (13, 1646800), (16, 1338025), (20, 1070420), (23, 930800), (25, 856336), (26, 823400), (40, 535210), (46, 465400), (50, 428168), (52, 411700), (65, 329360), (80, 267605), (92, 232700), (100, 214084), (104, 205850), (115, 186160), (130, 164680), (179, 119600), (184, 116350), (200, 107042), (208, 102925), (230, 93080), (260, 82340), (299, 71600), (325, 65872), (358, 59800), (368, 58175), (400, 53521), (460, 46540), (520, 41170), (575, 37232), (598, 35800), (650, 32936), (716, 29900), (895, 23920), (920, 23270), (1040, 20585), (1150, 18616), (1196, 17900), (1300, 16468), (1432, 14950), (1495, 14320), (1790, 11960), (1840, 11635), (2300, 9308), (2327, 9200), (2392, 8950), (2600, 8234), (2864, 7475), (2990, 7160), (3580, 5980), (4117, 5200), (4475, 4784), (4600, 4654)]