17778680

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{157}}^1$

素因数の和:336

約数の個数: 64

約数和(自身を含む): 42660000

約数和(自身を除く): 24881320

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 149, 152, 157, 190, 298, 314, 380, 596, 628, 745, 760, 785, 1192, 1256, 1490, 1570, 2831, 2980, 2983, 3140, 5662, 5960, 5966, 6280, 11324, 11932, 14155, 14915, 22648, 23393, 23864, 28310, 29830, 46786, 56620, 59660, 93572, 113240, 116965, 119320, 187144, 233930, 444467, 467860, 888934, 935720, 1777868, 2222335, 3555736, 4444670, 8889340, 17778680]

約数ペア:

[(1, 17778680), (2, 8889340), (4, 4444670), (5, 3555736), (8, 2222335), (10, 1777868), (19, 935720), (20, 888934), (38, 467860), (40, 444467), (76, 233930), (95, 187144), (149, 119320), (152, 116965), (157, 113240), (190, 93572), (298, 59660), (314, 56620), (380, 46786), (596, 29830), (628, 28310), (745, 23864), (760, 23393), (785, 22648), (1192, 14915), (1256, 14155), (1490, 11932), (1570, 11324), (2831, 6280), (2980, 5966), (2983, 5960), (3140, 5662)]