287639540

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{257}}^1\times {\mathrm{523}}^1$

素因数の和:896

約数の個数: 48

約数和(自身を含む): 613230912

約数和(自身を除く): 325591372

約数列:

[1, 2, 4, 5, 10, 20, 107, 214, 257, 428, 514, 523, 535, 1028, 1046, 1070, 1285, 2092, 2140, 2570, 2615, 5140, 5230, 10460, 27499, 54998, 55961, 109996, 111922, 134411, 137495, 223844, 268822, 274990, 279805, 537644, 549980, 559610, 672055, 1119220, 1344110, 2688220, 14381977, 28763954, 57527908, 71909885, 143819770, 287639540]

約数ペア:

[(1, 287639540), (2, 143819770), (4, 71909885), (5, 57527908), (10, 28763954), (20, 14381977), (107, 2688220), (214, 1344110), (257, 1119220), (428, 672055), (514, 559610), (523, 549980), (535, 537644), (1028, 279805), (1046, 274990), (1070, 268822), (1285, 223844), (2092, 137495), (2140, 134411), (2570, 111922), (2615, 109996), (5140, 55961), (5230, 54998), (10460, 27499)]