18218720

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{461}}^1$

素因数の和:508

約数の個数: 96

約数和(自身を含む): 48898080

約数和(自身を除く): 30679360

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 160, 190, 208, 247, 260, 304, 380, 416, 461, 494, 520, 608, 760, 922, 988, 1040, 1235, 1520, 1844, 1976, 2080, 2305, 2470, 3040, 3688, 3952, 4610, 4940, 5993, 7376, 7904, 8759, 9220, 9880, 11986, 14752, 17518, 18440, 19760, 23972, 29965, 35036, 36880, 39520, 43795, 47944, 59930, 70072, 73760, 87590, 95888, 113867, 119860, 140144, 175180, 191776, 227734, 239720, 280288, 350360, 455468, 479440, 569335, 700720, 910936, 958880, 1138670, 1401440, 1821872, 2277340, 3643744, 4554680, 9109360, 18218720]

約数ペア:

[(1, 18218720), (2, 9109360), (4, 4554680), (5, 3643744), (8, 2277340), (10, 1821872), (13, 1401440), (16, 1138670), (19, 958880), (20, 910936), (26, 700720), (32, 569335), (38, 479440), (40, 455468), (52, 350360), (65, 280288), (76, 239720), (80, 227734), (95, 191776), (104, 175180), (130, 140144), (152, 119860), (160, 113867), (190, 95888), (208, 87590), (247, 73760), (260, 70072), (304, 59930), (380, 47944), (416, 43795), (461, 39520), (494, 36880), (520, 35036), (608, 29965), (760, 23972), (922, 19760), (988, 18440), (1040, 17518), (1235, 14752), (1520, 11986), (1844, 9880), (1976, 9220), (2080, 8759), (2305, 7904), (2470, 7376), (3040, 5993), (3688, 4940), (3952, 4610)]