181564580

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{241}}^1\times {\mathrm{271}}^1$

素因数の和:660

約数の個数: 48

約数和(自身を含む): 387045120

約数和(自身を除く): 205480540

約数列:

[1, 2, 4, 5, 10, 20, 139, 241, 271, 278, 482, 542, 556, 695, 964, 1084, 1205, 1355, 1390, 2410, 2710, 2780, 4820, 5420, 33499, 37669, 65311, 66998, 75338, 130622, 133996, 150676, 167495, 188345, 261244, 326555, 334990, 376690, 653110, 669980, 753380, 1306220, 9078229, 18156458, 36312916, 45391145, 90782290, 181564580]

約数ペア:

[(1, 181564580), (2, 90782290), (4, 45391145), (5, 36312916), (10, 18156458), (20, 9078229), (139, 1306220), (241, 753380), (271, 669980), (278, 653110), (482, 376690), (542, 334990), (556, 326555), (695, 261244), (964, 188345), (1084, 167495), (1205, 150676), (1355, 133996), (1390, 130622), (2410, 75338), (2710, 66998), (2780, 65311), (4820, 37669), (5420, 33499)]