15722140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{263}}^1$

素因数の和:347

約数の個数: 72

約数和(自身を含む): 39184992

約数和(自身を除く): 23462852

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 61, 70, 98, 122, 140, 196, 244, 245, 263, 305, 427, 490, 526, 610, 854, 980, 1052, 1220, 1315, 1708, 1841, 2135, 2630, 2989, 3682, 4270, 5260, 5978, 7364, 8540, 9205, 11956, 12887, 14945, 16043, 18410, 25774, 29890, 32086, 36820, 51548, 59780, 64172, 64435, 80215, 112301, 128870, 160430, 224602, 257740, 320860, 449204, 561505, 786107, 1123010, 1572214, 2246020, 3144428, 3930535, 7861070, 15722140]

約数ペア:

[(1, 15722140), (2, 7861070), (4, 3930535), (5, 3144428), (7, 2246020), (10, 1572214), (14, 1123010), (20, 786107), (28, 561505), (35, 449204), (49, 320860), (61, 257740), (70, 224602), (98, 160430), (122, 128870), (140, 112301), (196, 80215), (244, 64435), (245, 64172), (263, 59780), (305, 51548), (427, 36820), (490, 32086), (526, 29890), (610, 25774), (854, 18410), (980, 16043), (1052, 14945), (1220, 12887), (1315, 11956), (1708, 9205), (1841, 8540), (2135, 7364), (2630, 5978), (2989, 5260), (3682, 4270)]