19397680

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^2\times {\mathrm{839}}^1$

素因数の和:886

約数の個数: 60

約数和(自身を含む): 47965680

約数和(自身を除く): 28568000

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 289, 340, 578, 680, 839, 1156, 1360, 1445, 1678, 2312, 2890, 3356, 4195, 4624, 5780, 6712, 8390, 11560, 13424, 14263, 16780, 23120, 28526, 33560, 57052, 67120, 71315, 114104, 142630, 228208, 242471, 285260, 484942, 570520, 969884, 1141040, 1212355, 1939768, 2424710, 3879536, 4849420, 9698840, 19397680]

約数ペア:

[(1, 19397680), (2, 9698840), (4, 4849420), (5, 3879536), (8, 2424710), (10, 1939768), (16, 1212355), (17, 1141040), (20, 969884), (34, 570520), (40, 484942), (68, 285260), (80, 242471), (85, 228208), (136, 142630), (170, 114104), (272, 71315), (289, 67120), (340, 57052), (578, 33560), (680, 28526), (839, 23120), (1156, 16780), (1360, 14263), (1445, 13424), (1678, 11560), (2312, 8390), (2890, 6712), (3356, 5780), (4195, 4624)]