25110040

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1$

素因数の和:364

約数の個数: 64

約数和(自身を含む): 59058720

約数和(自身を除く): 33948680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 61, 82, 122, 164, 205, 244, 251, 305, 328, 410, 488, 502, 610, 820, 1004, 1220, 1255, 1640, 2008, 2440, 2501, 2510, 5002, 5020, 10004, 10040, 10291, 12505, 15311, 20008, 20582, 25010, 30622, 41164, 50020, 51455, 61244, 76555, 82328, 100040, 102910, 122488, 153110, 205820, 306220, 411640, 612440, 627751, 1255502, 2511004, 3138755, 5022008, 6277510, 12555020, 25110040]

約数ペア:

[(1, 25110040), (2, 12555020), (4, 6277510), (5, 5022008), (8, 3138755), (10, 2511004), (20, 1255502), (40, 627751), (41, 612440), (61, 411640), (82, 306220), (122, 205820), (164, 153110), (205, 122488), (244, 102910), (251, 100040), (305, 82328), (328, 76555), (410, 61244), (488, 51455), (502, 50020), (610, 41164), (820, 30622), (1004, 25010), (1220, 20582), (1255, 20008), (1640, 15311), (2008, 12505), (2440, 10291), (2501, 10040), (2510, 10004), (5002, 5020)]