25000240

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:230

約数の個数: 80

約数和(自身を含む): 60888960

約数和(自身を除く): 35888720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 61, 80, 94, 109, 122, 188, 218, 235, 244, 305, 376, 436, 470, 488, 545, 610, 752, 872, 940, 976, 1090, 1220, 1744, 1880, 2180, 2440, 2867, 3760, 4360, 4880, 5123, 5734, 6649, 8720, 10246, 11468, 13298, 14335, 20492, 22936, 25615, 26596, 28670, 33245, 40984, 45872, 51230, 53192, 57340, 66490, 81968, 102460, 106384, 114680, 132980, 204920, 229360, 265960, 312503, 409840, 531920, 625006, 1250012, 1562515, 2500024, 3125030, 5000048, 6250060, 12500120, 25000240]

約数ペア:

[(1, 25000240), (2, 12500120), (4, 6250060), (5, 5000048), (8, 3125030), (10, 2500024), (16, 1562515), (20, 1250012), (40, 625006), (47, 531920), (61, 409840), (80, 312503), (94, 265960), (109, 229360), (122, 204920), (188, 132980), (218, 114680), (235, 106384), (244, 102460), (305, 81968), (376, 66490), (436, 57340), (470, 53192), (488, 51230), (545, 45872), (610, 40984), (752, 33245), (872, 28670), (940, 26596), (976, 25615), (1090, 22936), (1220, 20492), (1744, 14335), (1880, 13298), (2180, 11468), (2440, 10246), (2867, 8720), (3760, 6649), (4360, 5734), (4880, 5123)]