402800

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1$

素因数の和:90

約数の個数: 60

約数和(自身を含む): 1037880

約数和(自身を除く): 635080

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 53, 76, 80, 95, 100, 106, 152, 190, 200, 212, 265, 304, 380, 400, 424, 475, 530, 760, 848, 950, 1007, 1060, 1325, 1520, 1900, 2014, 2120, 2650, 3800, 4028, 4240, 5035, 5300, 7600, 8056, 10070, 10600, 16112, 20140, 21200, 25175, 40280, 50350, 80560, 100700, 201400, 402800]

約数ペア:

[(1, 402800), (2, 201400), (4, 100700), (5, 80560), (8, 50350), (10, 40280), (16, 25175), (19, 21200), (20, 20140), (25, 16112), (38, 10600), (40, 10070), (50, 8056), (53, 7600), (76, 5300), (80, 5035), (95, 4240), (100, 4028), (106, 3800), (152, 2650), (190, 2120), (200, 2014), (212, 1900), (265, 1520), (304, 1325), (380, 1060), (400, 1007), (424, 950), (475, 848), (530, 760)]