21983520

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{271}}^1$

素因数の和:315

約数の個数: 144

約数和(自身を含む): 75261312

約数和(自身を除く): 53277792

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 65, 78, 80, 96, 104, 120, 130, 156, 160, 169, 195, 208, 240, 260, 271, 312, 338, 390, 416, 480, 507, 520, 542, 624, 676, 780, 813, 845, 1014, 1040, 1084, 1248, 1352, 1355, 1560, 1626, 1690, 2028, 2080, 2168, 2535, 2704, 2710, 3120, 3252, 3380, 3523, 4056, 4065, 4336, 5070, 5408, 5420, 6240, 6504, 6760, 7046, 8112, 8130, 8672, 10140, 10569, 10840, 13008, 13520, 14092, 16224, 16260, 17615, 20280, 21138, 21680, 26016, 27040, 28184, 32520, 35230, 40560, 42276, 43360, 45799, 52845, 56368, 65040, 70460, 81120, 84552, 91598, 105690, 112736, 130080, 137397, 140920, 169104, 183196, 211380, 228995, 274794, 281840, 338208, 366392, 422760, 457990, 549588, 563680, 686985, 732784, 845520, 915980, 1099176, 1373970, 1465568, 1691040, 1831960, 2198352, 2747940, 3663920, 4396704, 5495880, 7327840, 10991760, 21983520]

約数ペア:

[(1, 21983520), (2, 10991760), (3, 7327840), (4, 5495880), (5, 4396704), (6, 3663920), (8, 2747940), (10, 2198352), (12, 1831960), (13, 1691040), (15, 1465568), (16, 1373970), (20, 1099176), (24, 915980), (26, 845520), (30, 732784), (32, 686985), (39, 563680), (40, 549588), (48, 457990), (52, 422760), (60, 366392), (65, 338208), (78, 281840), (80, 274794), (96, 228995), (104, 211380), (120, 183196), (130, 169104), (156, 140920), (160, 137397), (169, 130080), (195, 112736), (208, 105690), (240, 91598), (260, 84552), (271, 81120), (312, 70460), (338, 65040), (390, 56368), (416, 52845), (480, 45799), (507, 43360), (520, 42276), (542, 40560), (624, 35230), (676, 32520), (780, 28184), (813, 27040), (845, 26016), (1014, 21680), (1040, 21138), (1084, 20280), (1248, 17615), (1352, 16260), (1355, 16224), (1560, 14092), (1626, 13520), (1690, 13008), (2028, 10840), (2080, 10569), (2168, 10140), (2535, 8672), (2704, 8130), (2710, 8112), (3120, 7046), (3252, 6760), (3380, 6504), (3523, 6240), (4056, 5420), (4065, 5408), (4336, 5070)]