77989540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:277

約数の個数: 72

約数和(自身を含む): 177008832

約数和(自身を除く): 99019292

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 103, 131, 170, 206, 262, 289, 340, 412, 515, 524, 578, 655, 1030, 1156, 1310, 1445, 1751, 2060, 2227, 2620, 2890, 3502, 4454, 5780, 7004, 8755, 8908, 11135, 13493, 17510, 22270, 26986, 29767, 35020, 37859, 44540, 53972, 59534, 67465, 75718, 119068, 134930, 148835, 151436, 189295, 229381, 269860, 297670, 378590, 458762, 595340, 757180, 917524, 1146905, 2293810, 3899477, 4587620, 7798954, 15597908, 19497385, 38994770, 77989540]

約数ペア:

[(1, 77989540), (2, 38994770), (4, 19497385), (5, 15597908), (10, 7798954), (17, 4587620), (20, 3899477), (34, 2293810), (68, 1146905), (85, 917524), (103, 757180), (131, 595340), (170, 458762), (206, 378590), (262, 297670), (289, 269860), (340, 229381), (412, 189295), (515, 151436), (524, 148835), (578, 134930), (655, 119068), (1030, 75718), (1156, 67465), (1310, 59534), (1445, 53972), (1751, 44540), (2060, 37859), (2227, 35020), (2620, 29767), (2890, 26986), (3502, 22270), (4454, 17510), (5780, 13493), (7004, 11135), (8755, 8908)]