21371250

素因数分解:

$2^1\times 3^1\times 5^4\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:205

約数の個数: 80

約数和(自身を含む): 55107360

約数和(自身を除く): 33736110

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 41, 50, 75, 82, 123, 125, 139, 150, 205, 246, 250, 278, 375, 410, 417, 615, 625, 695, 750, 834, 1025, 1230, 1250, 1390, 1875, 2050, 2085, 3075, 3475, 3750, 4170, 5125, 5699, 6150, 6950, 10250, 10425, 11398, 15375, 17097, 17375, 20850, 25625, 28495, 30750, 34194, 34750, 51250, 52125, 56990, 76875, 85485, 86875, 104250, 142475, 153750, 170970, 173750, 260625, 284950, 427425, 521250, 712375, 854850, 1424750, 2137125, 3561875, 4274250, 7123750, 10685625, 21371250]

約数ペア:

[(1, 21371250), (2, 10685625), (3, 7123750), (5, 4274250), (6, 3561875), (10, 2137125), (15, 1424750), (25, 854850), (30, 712375), (41, 521250), (50, 427425), (75, 284950), (82, 260625), (123, 173750), (125, 170970), (139, 153750), (150, 142475), (205, 104250), (246, 86875), (250, 85485), (278, 76875), (375, 56990), (410, 52125), (417, 51250), (615, 34750), (625, 34194), (695, 30750), (750, 28495), (834, 25625), (1025, 20850), (1230, 17375), (1250, 17097), (1390, 15375), (1875, 11398), (2050, 10425), (2085, 10250), (3075, 6950), (3475, 6150), (3750, 5699), (4170, 5125)]