19687980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{587}}^1$

素因数の和:655

約数の個数: 96

約数和(自身を含む): 60850944

約数和(自身を除く): 41162964

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 43, 52, 60, 65, 78, 86, 129, 130, 156, 172, 195, 215, 258, 260, 390, 430, 516, 559, 587, 645, 780, 860, 1118, 1174, 1290, 1677, 1761, 2236, 2348, 2580, 2795, 2935, 3354, 3522, 5590, 5870, 6708, 7044, 7631, 8385, 8805, 11180, 11740, 15262, 16770, 17610, 22893, 25241, 30524, 33540, 35220, 38155, 45786, 50482, 75723, 76310, 91572, 100964, 114465, 126205, 151446, 152620, 228930, 252410, 302892, 328133, 378615, 457860, 504820, 656266, 757230, 984399, 1312532, 1514460, 1640665, 1968798, 3281330, 3937596, 4921995, 6562660, 9843990, 19687980]

約数ペア:

[(1, 19687980), (2, 9843990), (3, 6562660), (4, 4921995), (5, 3937596), (6, 3281330), (10, 1968798), (12, 1640665), (13, 1514460), (15, 1312532), (20, 984399), (26, 757230), (30, 656266), (39, 504820), (43, 457860), (52, 378615), (60, 328133), (65, 302892), (78, 252410), (86, 228930), (129, 152620), (130, 151446), (156, 126205), (172, 114465), (195, 100964), (215, 91572), (258, 76310), (260, 75723), (390, 50482), (430, 45786), (516, 38155), (559, 35220), (587, 33540), (645, 30524), (780, 25241), (860, 22893), (1118, 17610), (1174, 16770), (1290, 15262), (1677, 11740), (1761, 11180), (2236, 8805), (2348, 8385), (2580, 7631), (2795, 7044), (2935, 6708), (3354, 5870), (3522, 5590)]