19638840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12589}}^1$

素因数の和:12616

約数の個数: 64

約数和(自身を含む): 63453600

約数和(自身を除く): 43814760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 12589, 25178, 37767, 50356, 62945, 75534, 100712, 125890, 151068, 163657, 188835, 251780, 302136, 327314, 377670, 490971, 503560, 654628, 755340, 818285, 981942, 1309256, 1510680, 1636570, 1963884, 2454855, 3273140, 3927768, 4909710, 6546280, 9819420, 19638840]

約数ペア:

[(1, 19638840), (2, 9819420), (3, 6546280), (4, 4909710), (5, 3927768), (6, 3273140), (8, 2454855), (10, 1963884), (12, 1636570), (13, 1510680), (15, 1309256), (20, 981942), (24, 818285), (26, 755340), (30, 654628), (39, 503560), (40, 490971), (52, 377670), (60, 327314), (65, 302136), (78, 251780), (104, 188835), (120, 163657), (130, 151068), (156, 125890), (195, 100712), (260, 75534), (312, 62945), (390, 50356), (520, 37767), (780, 25178), (1560, 12589)]