28759720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{401}}^1$

素因数の和:586

約数の個数: 64

約数和(自身を含む): 71202240

約数和(自身を除く): 42442520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 163, 220, 326, 401, 440, 652, 802, 815, 1304, 1604, 1630, 1793, 2005, 3208, 3260, 3586, 4010, 4411, 6520, 7172, 8020, 8822, 8965, 14344, 16040, 17644, 17930, 22055, 35288, 35860, 44110, 65363, 71720, 88220, 130726, 176440, 261452, 326815, 522904, 653630, 718993, 1307260, 1437986, 2614520, 2875972, 3594965, 5751944, 7189930, 14379860, 28759720]

約数ペア:

[(1, 28759720), (2, 14379860), (4, 7189930), (5, 5751944), (8, 3594965), (10, 2875972), (11, 2614520), (20, 1437986), (22, 1307260), (40, 718993), (44, 653630), (55, 522904), (88, 326815), (110, 261452), (163, 176440), (220, 130726), (326, 88220), (401, 71720), (440, 65363), (652, 44110), (802, 35860), (815, 35288), (1304, 22055), (1604, 17930), (1630, 17644), (1793, 16040), (2005, 14344), (3208, 8965), (3260, 8822), (3586, 8020), (4010, 7172), (4411, 6520)]