305365000

素因数分解:

$2^3\times 5^4\times {\mathrm{157}}^1\times {\mathrm{389}}^1$

素因数の和:572

約数の個数: 80

約数和(自身を含む): 721878300

約数和(自身を除く): 416513300

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 157, 200, 250, 314, 389, 500, 625, 628, 778, 785, 1000, 1250, 1256, 1556, 1570, 1945, 2500, 3112, 3140, 3890, 3925, 5000, 6280, 7780, 7850, 9725, 15560, 15700, 19450, 19625, 31400, 38900, 39250, 48625, 61073, 77800, 78500, 97250, 98125, 122146, 157000, 194500, 196250, 243125, 244292, 305365, 389000, 392500, 486250, 488584, 610730, 785000, 972500, 1221460, 1526825, 1945000, 2442920, 3053650, 6107300, 7634125, 12214600, 15268250, 30536500, 38170625, 61073000, 76341250, 152682500, 305365000]

約数ペア:

[(1, 305365000), (2, 152682500), (4, 76341250), (5, 61073000), (8, 38170625), (10, 30536500), (20, 15268250), (25, 12214600), (40, 7634125), (50, 6107300), (100, 3053650), (125, 2442920), (157, 1945000), (200, 1526825), (250, 1221460), (314, 972500), (389, 785000), (500, 610730), (625, 488584), (628, 486250), (778, 392500), (785, 389000), (1000, 305365), (1250, 244292), (1256, 243125), (1556, 196250), (1570, 194500), (1945, 157000), (2500, 122146), (3112, 98125), (3140, 97250), (3890, 78500), (3925, 77800), (5000, 61073), (6280, 48625), (7780, 39250), (7850, 38900), (9725, 31400), (15560, 19625), (15700, 19450)]