18691920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1997}}^1$

素因数の和:2029

約数の個数: 120

約数和(自身を含む): 67636296

約数和(自身を除く): 48944376

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 104, 117, 120, 130, 144, 156, 180, 195, 208, 234, 240, 260, 312, 360, 390, 468, 520, 585, 624, 720, 780, 936, 1040, 1170, 1560, 1872, 1997, 2340, 3120, 3994, 4680, 5991, 7988, 9360, 9985, 11982, 15976, 17973, 19970, 23964, 25961, 29955, 31952, 35946, 39940, 47928, 51922, 59910, 71892, 77883, 79880, 89865, 95856, 103844, 119820, 129805, 143784, 155766, 159760, 179730, 207688, 233649, 239640, 259610, 287568, 311532, 359460, 389415, 415376, 467298, 479280, 519220, 623064, 718920, 778830, 934596, 1038440, 1168245, 1246128, 1437840, 1557660, 1869192, 2076880, 2336490, 3115320, 3738384, 4672980, 6230640, 9345960, 18691920]

約数ペア:

[(1, 18691920), (2, 9345960), (3, 6230640), (4, 4672980), (5, 3738384), (6, 3115320), (8, 2336490), (9, 2076880), (10, 1869192), (12, 1557660), (13, 1437840), (15, 1246128), (16, 1168245), (18, 1038440), (20, 934596), (24, 778830), (26, 718920), (30, 623064), (36, 519220), (39, 479280), (40, 467298), (45, 415376), (48, 389415), (52, 359460), (60, 311532), (65, 287568), (72, 259610), (78, 239640), (80, 233649), (90, 207688), (104, 179730), (117, 159760), (120, 155766), (130, 143784), (144, 129805), (156, 119820), (180, 103844), (195, 95856), (208, 89865), (234, 79880), (240, 77883), (260, 71892), (312, 59910), (360, 51922), (390, 47928), (468, 39940), (520, 35946), (585, 31952), (624, 29955), (720, 25961), (780, 23964), (936, 19970), (1040, 17973), (1170, 15976), (1560, 11982), (1872, 9985), (1997, 9360), (2340, 7988), (3120, 5991), (3994, 4680)]