28940120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1$

素因数の和:165

約数の個数: 128

約数和(自身を含む): 77682240

約数和(自身を除く): 48742120

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 53, 55, 68, 73, 85, 88, 106, 110, 136, 146, 170, 187, 212, 220, 265, 292, 340, 365, 374, 424, 440, 530, 583, 584, 680, 730, 748, 803, 901, 935, 1060, 1166, 1241, 1460, 1496, 1606, 1802, 1870, 2120, 2332, 2482, 2915, 2920, 3212, 3604, 3740, 3869, 4015, 4505, 4664, 4964, 5830, 6205, 6424, 7208, 7480, 7738, 8030, 9010, 9911, 9928, 11660, 12410, 13651, 15476, 16060, 18020, 19345, 19822, 23320, 24820, 27302, 30952, 32120, 36040, 38690, 39644, 42559, 49555, 49640, 54604, 65773, 68255, 77380, 79288, 85118, 99110, 109208, 131546, 136510, 154760, 170236, 198220, 212795, 263092, 273020, 328865, 340472, 396440, 425590, 526184, 546040, 657730, 723503, 851180, 1315460, 1447006, 1702360, 2630920, 2894012, 3617515, 5788024, 7235030, 14470060, 28940120]

約数ペア:

[(1, 28940120), (2, 14470060), (4, 7235030), (5, 5788024), (8, 3617515), (10, 2894012), (11, 2630920), (17, 1702360), (20, 1447006), (22, 1315460), (34, 851180), (40, 723503), (44, 657730), (53, 546040), (55, 526184), (68, 425590), (73, 396440), (85, 340472), (88, 328865), (106, 273020), (110, 263092), (136, 212795), (146, 198220), (170, 170236), (187, 154760), (212, 136510), (220, 131546), (265, 109208), (292, 99110), (340, 85118), (365, 79288), (374, 77380), (424, 68255), (440, 65773), (530, 54604), (583, 49640), (584, 49555), (680, 42559), (730, 39644), (748, 38690), (803, 36040), (901, 32120), (935, 30952), (1060, 27302), (1166, 24820), (1241, 23320), (1460, 19822), (1496, 19345), (1606, 18020), (1802, 16060), (1870, 15476), (2120, 13651), (2332, 12410), (2482, 11660), (2915, 9928), (2920, 9911), (3212, 9010), (3604, 8030), (3740, 7738), (3869, 7480), (4015, 7208), (4505, 6424), (4664, 6205), (4964, 5830)]