18139980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:223

約数の個数: 96

約数和(自身を含む): 53222400

約数和(自身を除く): 35082420

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 79, 86, 89, 129, 158, 172, 178, 215, 237, 258, 267, 316, 356, 395, 430, 445, 474, 516, 534, 645, 790, 860, 890, 948, 1068, 1185, 1290, 1335, 1580, 1780, 2370, 2580, 2670, 3397, 3827, 4740, 5340, 6794, 7031, 7654, 10191, 11481, 13588, 14062, 15308, 16985, 19135, 20382, 21093, 22962, 28124, 33970, 35155, 38270, 40764, 42186, 45924, 50955, 57405, 67940, 70310, 76540, 84372, 101910, 105465, 114810, 140620, 203820, 210930, 229620, 302333, 421860, 604666, 906999, 1209332, 1511665, 1813998, 3023330, 3627996, 4534995, 6046660, 9069990, 18139980]

約数ペア:

[(1, 18139980), (2, 9069990), (3, 6046660), (4, 4534995), (5, 3627996), (6, 3023330), (10, 1813998), (12, 1511665), (15, 1209332), (20, 906999), (30, 604666), (43, 421860), (60, 302333), (79, 229620), (86, 210930), (89, 203820), (129, 140620), (158, 114810), (172, 105465), (178, 101910), (215, 84372), (237, 76540), (258, 70310), (267, 67940), (316, 57405), (356, 50955), (395, 45924), (430, 42186), (445, 40764), (474, 38270), (516, 35155), (534, 33970), (645, 28124), (790, 22962), (860, 21093), (890, 20382), (948, 19135), (1068, 16985), (1185, 15308), (1290, 14062), (1335, 13588), (1580, 11481), (1780, 10191), (2370, 7654), (2580, 7031), (2670, 6794), (3397, 5340), (3827, 4740)]