138840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1$

素因数の和:116

約数の個数: 64

約数和(自身を含む): 453600

約数和(自身を除く): 314760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 89, 104, 120, 130, 156, 178, 195, 260, 267, 312, 356, 390, 445, 520, 534, 712, 780, 890, 1068, 1157, 1335, 1560, 1780, 2136, 2314, 2670, 3471, 3560, 4628, 5340, 5785, 6942, 9256, 10680, 11570, 13884, 17355, 23140, 27768, 34710, 46280, 69420, 138840]

約数ペア:

[(1, 138840), (2, 69420), (3, 46280), (4, 34710), (5, 27768), (6, 23140), (8, 17355), (10, 13884), (12, 11570), (13, 10680), (15, 9256), (20, 6942), (24, 5785), (26, 5340), (30, 4628), (39, 3560), (40, 3471), (52, 2670), (60, 2314), (65, 2136), (78, 1780), (89, 1560), (104, 1335), (120, 1157), (130, 1068), (156, 890), (178, 780), (195, 712), (260, 534), (267, 520), (312, 445), (356, 390)]