18911520

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{571}}^1$

素因数の和:615

約数の個数: 144

約数和(自身を含む): 67459392

約数和(自身を除く): 48547872

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 32, 36, 40, 45, 46, 48, 60, 69, 72, 80, 90, 92, 96, 115, 120, 138, 144, 160, 180, 184, 207, 230, 240, 276, 288, 345, 360, 368, 414, 460, 480, 552, 571, 690, 720, 736, 828, 920, 1035, 1104, 1142, 1380, 1440, 1656, 1713, 1840, 2070, 2208, 2284, 2760, 2855, 3312, 3426, 3680, 4140, 4568, 5139, 5520, 5710, 6624, 6852, 8280, 8565, 9136, 10278, 11040, 11420, 13133, 13704, 16560, 17130, 18272, 20556, 22840, 25695, 26266, 27408, 33120, 34260, 39399, 41112, 45680, 51390, 52532, 54816, 65665, 68520, 78798, 82224, 91360, 102780, 105064, 118197, 131330, 137040, 157596, 164448, 196995, 205560, 210128, 236394, 262660, 274080, 315192, 393990, 411120, 420256, 472788, 525320, 590985, 630384, 787980, 822240, 945576, 1050640, 1181970, 1260768, 1575960, 1891152, 2101280, 2363940, 3151920, 3782304, 4727880, 6303840, 9455760, 18911520]

約数ペア:

[(1, 18911520), (2, 9455760), (3, 6303840), (4, 4727880), (5, 3782304), (6, 3151920), (8, 2363940), (9, 2101280), (10, 1891152), (12, 1575960), (15, 1260768), (16, 1181970), (18, 1050640), (20, 945576), (23, 822240), (24, 787980), (30, 630384), (32, 590985), (36, 525320), (40, 472788), (45, 420256), (46, 411120), (48, 393990), (60, 315192), (69, 274080), (72, 262660), (80, 236394), (90, 210128), (92, 205560), (96, 196995), (115, 164448), (120, 157596), (138, 137040), (144, 131330), (160, 118197), (180, 105064), (184, 102780), (207, 91360), (230, 82224), (240, 78798), (276, 68520), (288, 65665), (345, 54816), (360, 52532), (368, 51390), (414, 45680), (460, 41112), (480, 39399), (552, 34260), (571, 33120), (690, 27408), (720, 26266), (736, 25695), (828, 22840), (920, 20556), (1035, 18272), (1104, 17130), (1142, 16560), (1380, 13704), (1440, 13133), (1656, 11420), (1713, 11040), (1840, 10278), (2070, 9136), (2208, 8565), (2284, 8280), (2760, 6852), (2855, 6624), (3312, 5710), (3426, 5520), (3680, 5139), (4140, 4568)]