18919300

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{359}}^1$

素因数の和:421

約数の個数: 72

約数和(自身を含む): 44997120

約数和(自身を除く): 26077820

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 31, 34, 50, 62, 68, 85, 100, 124, 155, 170, 310, 340, 359, 425, 527, 620, 718, 775, 850, 1054, 1436, 1550, 1700, 1795, 2108, 2635, 3100, 3590, 5270, 6103, 7180, 8975, 10540, 11129, 12206, 13175, 17950, 22258, 24412, 26350, 30515, 35900, 44516, 52700, 55645, 61030, 111290, 122060, 152575, 189193, 222580, 278225, 305150, 378386, 556450, 610300, 756772, 945965, 1112900, 1891930, 3783860, 4729825, 9459650, 18919300]

約数ペア:

[(1, 18919300), (2, 9459650), (4, 4729825), (5, 3783860), (10, 1891930), (17, 1112900), (20, 945965), (25, 756772), (31, 610300), (34, 556450), (50, 378386), (62, 305150), (68, 278225), (85, 222580), (100, 189193), (124, 152575), (155, 122060), (170, 111290), (310, 61030), (340, 55645), (359, 52700), (425, 44516), (527, 35900), (620, 30515), (718, 26350), (775, 24412), (850, 22258), (1054, 17950), (1436, 13175), (1550, 12206), (1700, 11129), (1795, 10540), (2108, 8975), (2635, 7180), (3100, 6103), (3590, 5270)]