400160

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:117

約数の個数: 48

約数和(自身を含む): 984312

約数和(自身を除く): 584152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 61, 80, 82, 122, 160, 164, 205, 244, 305, 328, 410, 488, 610, 656, 820, 976, 1220, 1312, 1640, 1952, 2440, 2501, 3280, 4880, 5002, 6560, 9760, 10004, 12505, 20008, 25010, 40016, 50020, 80032, 100040, 200080, 400160]

約数ペア:

[(1, 400160), (2, 200080), (4, 100040), (5, 80032), (8, 50020), (10, 40016), (16, 25010), (20, 20008), (32, 12505), (40, 10004), (41, 9760), (61, 6560), (80, 5002), (82, 4880), (122, 3280), (160, 2501), (164, 2440), (205, 1952), (244, 1640), (305, 1312), (328, 1220), (410, 976), (488, 820), (610, 656)]