20745750

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:358

約数の個数: 64

約数和(自身を含む): 52416000

約数和(自身を除く): 31670250

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 125, 139, 150, 199, 250, 278, 375, 398, 417, 597, 695, 750, 834, 995, 1194, 1390, 1990, 2085, 2985, 3475, 4170, 4975, 5970, 6950, 9950, 10425, 14925, 17375, 20850, 24875, 27661, 29850, 34750, 49750, 52125, 55322, 74625, 82983, 104250, 138305, 149250, 165966, 276610, 414915, 691525, 829830, 1383050, 2074575, 3457625, 4149150, 6915250, 10372875, 20745750]

約数ペア:

[(1, 20745750), (2, 10372875), (3, 6915250), (5, 4149150), (6, 3457625), (10, 2074575), (15, 1383050), (25, 829830), (30, 691525), (50, 414915), (75, 276610), (125, 165966), (139, 149250), (150, 138305), (199, 104250), (250, 82983), (278, 74625), (375, 55322), (398, 52125), (417, 49750), (597, 34750), (695, 29850), (750, 27661), (834, 24875), (995, 20850), (1194, 17375), (1390, 14925), (1990, 10425), (2085, 9950), (2985, 6950), (3475, 5970), (4170, 4975)]