278366980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{1747}}^1$

素因数の和:2044

約数の個数: 48

約数和(自身を含む): 606122496

約数和(自身を除く): 327755516

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 257, 310, 514, 620, 1028, 1285, 1747, 2570, 3494, 5140, 6988, 7967, 8735, 15934, 17470, 31868, 34940, 39835, 54157, 79670, 108314, 159340, 216628, 270785, 448979, 541570, 897958, 1083140, 1795916, 2244895, 4489790, 8979580, 13918349, 27836698, 55673396, 69591745, 139183490, 278366980]

約数ペア:

[(1, 278366980), (2, 139183490), (4, 69591745), (5, 55673396), (10, 27836698), (20, 13918349), (31, 8979580), (62, 4489790), (124, 2244895), (155, 1795916), (257, 1083140), (310, 897958), (514, 541570), (620, 448979), (1028, 270785), (1285, 216628), (1747, 159340), (2570, 108314), (3494, 79670), (5140, 54157), (6988, 39835), (7967, 34940), (8735, 31868), (15934, 17470)]