21730000

素因数分解:

$2^4\times 5^4\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:122

約数の個数: 100

約数和(自身を含む): 54910548

約数和(自身を除く): 33180548

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 41, 50, 53, 80, 82, 100, 106, 125, 164, 200, 205, 212, 250, 265, 328, 400, 410, 424, 500, 530, 625, 656, 820, 848, 1000, 1025, 1060, 1250, 1325, 1640, 2000, 2050, 2120, 2173, 2500, 2650, 3280, 4100, 4240, 4346, 5000, 5125, 5300, 6625, 8200, 8692, 10000, 10250, 10600, 10865, 13250, 16400, 17384, 20500, 21200, 21730, 25625, 26500, 33125, 34768, 41000, 43460, 51250, 53000, 54325, 66250, 82000, 86920, 102500, 106000, 108650, 132500, 173840, 205000, 217300, 265000, 271625, 410000, 434600, 530000, 543250, 869200, 1086500, 1358125, 2173000, 2716250, 4346000, 5432500, 10865000, 21730000]

約数ペア:

[(1, 21730000), (2, 10865000), (4, 5432500), (5, 4346000), (8, 2716250), (10, 2173000), (16, 1358125), (20, 1086500), (25, 869200), (40, 543250), (41, 530000), (50, 434600), (53, 410000), (80, 271625), (82, 265000), (100, 217300), (106, 205000), (125, 173840), (164, 132500), (200, 108650), (205, 106000), (212, 102500), (250, 86920), (265, 82000), (328, 66250), (400, 54325), (410, 53000), (424, 51250), (500, 43460), (530, 41000), (625, 34768), (656, 33125), (820, 26500), (848, 25625), (1000, 21730), (1025, 21200), (1060, 20500), (1250, 17384), (1325, 16400), (1640, 13250), (2000, 10865), (2050, 10600), (2120, 10250), (2173, 10000), (2500, 8692), (2650, 8200), (3280, 6625), (4100, 5300), (4240, 5125), (4346, 5000)]