163555880

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{179}}^1\times {\mathrm{431}}^1$

素因数の和:674

約数の個数: 64

約数和(自身を含む): 377913600

約数和(自身を除く): 214357720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 179, 212, 265, 358, 424, 431, 530, 716, 862, 895, 1060, 1432, 1724, 1790, 2120, 2155, 3448, 3580, 4310, 7160, 8620, 9487, 17240, 18974, 22843, 37948, 45686, 47435, 75896, 77149, 91372, 94870, 114215, 154298, 182744, 189740, 228430, 308596, 379480, 385745, 456860, 617192, 771490, 913720, 1542980, 3085960, 4088897, 8177794, 16355588, 20444485, 32711176, 40888970, 81777940, 163555880]

約数ペア:

[(1, 163555880), (2, 81777940), (4, 40888970), (5, 32711176), (8, 20444485), (10, 16355588), (20, 8177794), (40, 4088897), (53, 3085960), (106, 1542980), (179, 913720), (212, 771490), (265, 617192), (358, 456860), (424, 385745), (431, 379480), (530, 308596), (716, 228430), (862, 189740), (895, 182744), (1060, 154298), (1432, 114215), (1724, 94870), (1790, 91372), (2120, 77149), (2155, 75896), (3448, 47435), (3580, 45686), (4310, 37948), (7160, 22843), (8620, 18974), (9487, 17240)]