81529320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{227}}^1$

素因数の和:355

約数の個数: 128

約数和(自身を含む): 255104640

約数和(自身を除く): 173575320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 41, 60, 73, 82, 120, 123, 146, 164, 205, 219, 227, 246, 292, 328, 365, 410, 438, 454, 492, 584, 615, 681, 730, 820, 876, 908, 984, 1095, 1135, 1230, 1362, 1460, 1640, 1752, 1816, 2190, 2270, 2460, 2724, 2920, 2993, 3405, 4380, 4540, 4920, 5448, 5986, 6810, 8760, 8979, 9080, 9307, 11972, 13620, 14965, 16571, 17958, 18614, 23944, 27240, 27921, 29930, 33142, 35916, 37228, 44895, 46535, 49713, 55842, 59860, 66284, 71832, 74456, 82855, 89790, 93070, 99426, 111684, 119720, 132568, 139605, 165710, 179580, 186140, 198852, 223368, 248565, 279210, 331420, 359160, 372280, 397704, 497130, 558420, 662840, 679411, 994260, 1116840, 1358822, 1988520, 2038233, 2717644, 3397055, 4076466, 5435288, 6794110, 8152932, 10191165, 13588220, 16305864, 20382330, 27176440, 40764660, 81529320]

約数ペア:

[(1, 81529320), (2, 40764660), (3, 27176440), (4, 20382330), (5, 16305864), (6, 13588220), (8, 10191165), (10, 8152932), (12, 6794110), (15, 5435288), (20, 4076466), (24, 3397055), (30, 2717644), (40, 2038233), (41, 1988520), (60, 1358822), (73, 1116840), (82, 994260), (120, 679411), (123, 662840), (146, 558420), (164, 497130), (205, 397704), (219, 372280), (227, 359160), (246, 331420), (292, 279210), (328, 248565), (365, 223368), (410, 198852), (438, 186140), (454, 179580), (492, 165710), (584, 139605), (615, 132568), (681, 119720), (730, 111684), (820, 99426), (876, 93070), (908, 89790), (984, 82855), (1095, 74456), (1135, 71832), (1230, 66284), (1362, 59860), (1460, 55842), (1640, 49713), (1752, 46535), (1816, 44895), (2190, 37228), (2270, 35916), (2460, 33142), (2724, 29930), (2920, 27921), (2993, 27240), (3405, 23944), (4380, 18614), (4540, 17958), (4920, 16571), (5448, 14965), (5986, 13620), (6810, 11972), (8760, 9307), (8979, 9080)]