644910238

素因数分解:

$2^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1$

素因数の和:385

約数の個数: 64

約数和(自身を含む): 1168473600

約数和(自身を除く): 523563362

約数列:

[1, 2, 7, 14, 41, 59, 82, 118, 137, 139, 274, 278, 287, 413, 574, 826, 959, 973, 1918, 1946, 2419, 4838, 5617, 5699, 8083, 8201, 11234, 11398, 16166, 16402, 16933, 19043, 33866, 38086, 39319, 39893, 56581, 57407, 78638, 79786, 113162, 114814, 133301, 266602, 331403, 336241, 662806, 672482, 780763, 1123537, 1561526, 2247074, 2319821, 2353687, 4639642, 4707374, 5465341, 7864759, 10930682, 15729518, 46065017, 92130034, 322455119, 644910238]

約数ペア:

[(1, 644910238), (2, 322455119), (7, 92130034), (14, 46065017), (41, 15729518), (59, 10930682), (82, 7864759), (118, 5465341), (137, 4707374), (139, 4639642), (274, 2353687), (278, 2319821), (287, 2247074), (413, 1561526), (574, 1123537), (826, 780763), (959, 672482), (973, 662806), (1918, 336241), (1946, 331403), (2419, 266602), (4838, 133301), (5617, 114814), (5699, 113162), (8083, 79786), (8201, 78638), (11234, 57407), (11398, 56581), (16166, 39893), (16402, 39319), (16933, 38086), (19043, 33866)]