20118140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:219

約数の個数: 96

約数和(自身を含む): 52254720

約数和(自身を除く): 32136580

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 79, 85, 107, 119, 140, 158, 170, 214, 238, 316, 340, 395, 428, 476, 535, 553, 595, 749, 790, 1070, 1106, 1190, 1343, 1498, 1580, 1819, 2140, 2212, 2380, 2686, 2765, 2996, 3638, 3745, 5372, 5530, 6715, 7276, 7490, 8453, 9095, 9401, 11060, 12733, 13430, 14980, 16906, 18190, 18802, 25466, 26860, 33812, 36380, 37604, 42265, 47005, 50932, 59171, 63665, 84530, 94010, 118342, 127330, 143701, 169060, 188020, 236684, 254660, 287402, 295855, 574804, 591710, 718505, 1005907, 1183420, 1437010, 2011814, 2874020, 4023628, 5029535, 10059070, 20118140]

約数ペア:

[(1, 20118140), (2, 10059070), (4, 5029535), (5, 4023628), (7, 2874020), (10, 2011814), (14, 1437010), (17, 1183420), (20, 1005907), (28, 718505), (34, 591710), (35, 574804), (68, 295855), (70, 287402), (79, 254660), (85, 236684), (107, 188020), (119, 169060), (140, 143701), (158, 127330), (170, 118342), (214, 94010), (238, 84530), (316, 63665), (340, 59171), (395, 50932), (428, 47005), (476, 42265), (535, 37604), (553, 36380), (595, 33812), (749, 26860), (790, 25466), (1070, 18802), (1106, 18190), (1190, 16906), (1343, 14980), (1498, 13430), (1580, 12733), (1819, 11060), (2140, 9401), (2212, 9095), (2380, 8453), (2686, 7490), (2765, 7276), (2996, 6715), (3638, 5530), (3745, 5372)]