39647560

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{16249}}^1$

素因数の和:16321

約数の個数: 32

約数和(自身を含む): 90675000

約数和(自身を除く): 51027440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 16249, 32498, 64996, 81245, 129992, 162490, 324980, 649960, 991189, 1982378, 3964756, 4955945, 7929512, 9911890, 19823780, 39647560]

約数ペア:

[(1, 39647560), (2, 19823780), (4, 9911890), (5, 7929512), (8, 4955945), (10, 3964756), (20, 1982378), (40, 991189), (61, 649960), (122, 324980), (244, 162490), (305, 129992), (488, 81245), (610, 64996), (1220, 32498), (2440, 16249)]