639903664

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{38567}}^1$

素因数の和:38653

約数の個数: 40

約数和(自身を含む): 1334298528

約数和(自身を除く): 694394864

約数列:

[1, 2, 4, 8, 16, 17, 34, 61, 68, 122, 136, 244, 272, 488, 976, 1037, 2074, 4148, 8296, 16592, 38567, 77134, 154268, 308536, 617072, 655639, 1311278, 2352587, 2622556, 4705174, 5245112, 9410348, 10490224, 18820696, 37641392, 39993979, 79987958, 159975916, 319951832, 639903664]

約数ペア:

[(1, 639903664), (2, 319951832), (4, 159975916), (8, 79987958), (16, 39993979), (17, 37641392), (34, 18820696), (61, 10490224), (68, 9410348), (122, 5245112), (136, 4705174), (244, 2622556), (272, 2352587), (488, 1311278), (976, 655639), (1037, 617072), (2074, 308536), (4148, 154268), (8296, 77134), (16592, 38567)]