20847680

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{227}}^1$

素因数の和:292

約数の個数: 112

約数和(自身を含む): 58375296

約数和(自身を除く): 37527616

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 41, 56, 64, 70, 80, 82, 112, 140, 160, 164, 205, 224, 227, 280, 287, 320, 328, 410, 448, 454, 560, 574, 656, 820, 908, 1120, 1135, 1148, 1312, 1435, 1589, 1640, 1816, 2240, 2270, 2296, 2624, 2870, 3178, 3280, 3632, 4540, 4592, 5740, 6356, 6560, 7264, 7945, 9080, 9184, 9307, 11480, 12712, 13120, 14528, 15890, 18160, 18368, 18614, 22960, 25424, 31780, 36320, 37228, 45920, 46535, 50848, 63560, 65149, 72640, 74456, 91840, 93070, 101696, 127120, 130298, 148912, 186140, 254240, 260596, 297824, 325745, 372280, 508480, 521192, 595648, 651490, 744560, 1042384, 1302980, 1489120, 2084768, 2605960, 2978240, 4169536, 5211920, 10423840, 20847680]

約数ペア:

[(1, 20847680), (2, 10423840), (4, 5211920), (5, 4169536), (7, 2978240), (8, 2605960), (10, 2084768), (14, 1489120), (16, 1302980), (20, 1042384), (28, 744560), (32, 651490), (35, 595648), (40, 521192), (41, 508480), (56, 372280), (64, 325745), (70, 297824), (80, 260596), (82, 254240), (112, 186140), (140, 148912), (160, 130298), (164, 127120), (205, 101696), (224, 93070), (227, 91840), (280, 74456), (287, 72640), (320, 65149), (328, 63560), (410, 50848), (448, 46535), (454, 45920), (560, 37228), (574, 36320), (656, 31780), (820, 25424), (908, 22960), (1120, 18614), (1135, 18368), (1148, 18160), (1312, 15890), (1435, 14528), (1589, 13120), (1640, 12712), (1816, 11480), (2240, 9307), (2270, 9184), (2296, 9080), (2624, 7945), (2870, 7264), (3178, 6560), (3280, 6356), (3632, 5740), (4540, 4592)]