2018380720

素因数分解:

$2^4\times 5^1\times {\mathrm{83}}^1\times {\mathrm{449}}^1\times {\mathrm{677}}^1$

素因数の和:1222

約数の個数: 80

約数和(自身を含む): 4766882400

約数和(自身を除く): 2748501680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 83, 166, 332, 415, 449, 664, 677, 830, 898, 1328, 1354, 1660, 1796, 2245, 2708, 3320, 3385, 3592, 4490, 5416, 6640, 6770, 7184, 8980, 10832, 13540, 17960, 27080, 35920, 37267, 54160, 56191, 74534, 112382, 149068, 186335, 224764, 280955, 298136, 303973, 372670, 449528, 561910, 596272, 607946, 745340, 899056, 1123820, 1215892, 1490680, 1519865, 2247640, 2431784, 2981360, 3039730, 4495280, 4863568, 6079460, 12158920, 24317840, 25229759, 50459518, 100919036, 126148795, 201838072, 252297590, 403676144, 504595180, 1009190360, 2018380720]

約数ペア:

[(1, 2018380720), (2, 1009190360), (4, 504595180), (5, 403676144), (8, 252297590), (10, 201838072), (16, 126148795), (20, 100919036), (40, 50459518), (80, 25229759), (83, 24317840), (166, 12158920), (332, 6079460), (415, 4863568), (449, 4495280), (664, 3039730), (677, 2981360), (830, 2431784), (898, 2247640), (1328, 1519865), (1354, 1490680), (1660, 1215892), (1796, 1123820), (2245, 899056), (2708, 745340), (3320, 607946), (3385, 596272), (3592, 561910), (4490, 449528), (5416, 372670), (6640, 303973), (6770, 298136), (7184, 280955), (8980, 224764), (10832, 186335), (13540, 149068), (17960, 112382), (27080, 74534), (35920, 56191), (37267, 54160)]