21797560

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:125

約数の個数: 128

約数和(自身を含む): 57024000

約数和(自身を除く): 35226440

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 23, 29, 38, 40, 43, 46, 58, 76, 86, 92, 95, 115, 116, 145, 152, 172, 184, 190, 215, 230, 232, 290, 344, 380, 430, 437, 460, 551, 580, 667, 760, 817, 860, 874, 920, 989, 1102, 1160, 1247, 1334, 1634, 1720, 1748, 1978, 2185, 2204, 2494, 2668, 2755, 3268, 3335, 3496, 3956, 4085, 4370, 4408, 4945, 4988, 5336, 5510, 6235, 6536, 6670, 7912, 8170, 8740, 9890, 9976, 11020, 12470, 12673, 13340, 16340, 17480, 18791, 19780, 22040, 23693, 24940, 25346, 26680, 28681, 32680, 37582, 39560, 47386, 49880, 50692, 57362, 63365, 75164, 93955, 94772, 101384, 114724, 118465, 126730, 143405, 150328, 187910, 189544, 229448, 236930, 253460, 286810, 375820, 473860, 506920, 544939, 573620, 751640, 947720, 1089878, 1147240, 2179756, 2724695, 4359512, 5449390, 10898780, 21797560]

約数ペア:

[(1, 21797560), (2, 10898780), (4, 5449390), (5, 4359512), (8, 2724695), (10, 2179756), (19, 1147240), (20, 1089878), (23, 947720), (29, 751640), (38, 573620), (40, 544939), (43, 506920), (46, 473860), (58, 375820), (76, 286810), (86, 253460), (92, 236930), (95, 229448), (115, 189544), (116, 187910), (145, 150328), (152, 143405), (172, 126730), (184, 118465), (190, 114724), (215, 101384), (230, 94772), (232, 93955), (290, 75164), (344, 63365), (380, 57362), (430, 50692), (437, 49880), (460, 47386), (551, 39560), (580, 37582), (667, 32680), (760, 28681), (817, 26680), (860, 25346), (874, 24940), (920, 23693), (989, 22040), (1102, 19780), (1160, 18791), (1247, 17480), (1334, 16340), (1634, 13340), (1720, 12673), (1748, 12470), (1978, 11020), (2185, 9976), (2204, 9890), (2494, 8740), (2668, 8170), (2755, 7912), (3268, 6670), (3335, 6536), (3496, 6235), (3956, 5510), (4085, 5336), (4370, 4988), (4408, 4945)]