20038240

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:224

約数の個数: 96

約数和(自身を含む): 51438240

約数和(自身を除く): 31400000

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 53, 68, 80, 85, 106, 136, 139, 160, 170, 212, 265, 272, 278, 340, 424, 530, 544, 556, 680, 695, 848, 901, 1060, 1112, 1360, 1390, 1696, 1802, 2120, 2224, 2363, 2720, 2780, 3604, 4240, 4448, 4505, 4726, 5560, 7208, 7367, 8480, 9010, 9452, 11120, 11815, 14416, 14734, 18020, 18904, 22240, 23630, 28832, 29468, 36040, 36835, 37808, 47260, 58936, 72080, 73670, 75616, 94520, 117872, 125239, 144160, 147340, 189040, 235744, 250478, 294680, 378080, 500956, 589360, 626195, 1001912, 1178720, 1252390, 2003824, 2504780, 4007648, 5009560, 10019120, 20038240]

約数ペア:

[(1, 20038240), (2, 10019120), (4, 5009560), (5, 4007648), (8, 2504780), (10, 2003824), (16, 1252390), (17, 1178720), (20, 1001912), (32, 626195), (34, 589360), (40, 500956), (53, 378080), (68, 294680), (80, 250478), (85, 235744), (106, 189040), (136, 147340), (139, 144160), (160, 125239), (170, 117872), (212, 94520), (265, 75616), (272, 73670), (278, 72080), (340, 58936), (424, 47260), (530, 37808), (544, 36835), (556, 36040), (680, 29468), (695, 28832), (848, 23630), (901, 22240), (1060, 18904), (1112, 18020), (1360, 14734), (1390, 14416), (1696, 11815), (1802, 11120), (2120, 9452), (2224, 9010), (2363, 8480), (2720, 7367), (2780, 7208), (3604, 5560), (4240, 4726), (4448, 4505)]