21782480

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{229}}^1$

素因数の和:312

約数の個数: 80

約数和(自身を含む): 53902800

約数和(自身を除く): 32120320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 41, 58, 80, 82, 116, 145, 164, 205, 229, 232, 290, 328, 410, 458, 464, 580, 656, 820, 916, 1145, 1160, 1189, 1640, 1832, 2290, 2320, 2378, 3280, 3664, 4580, 4756, 5945, 6641, 9160, 9389, 9512, 11890, 13282, 18320, 18778, 19024, 23780, 26564, 33205, 37556, 46945, 47560, 53128, 66410, 75112, 93890, 95120, 106256, 132820, 150224, 187780, 265640, 272281, 375560, 531280, 544562, 751120, 1089124, 1361405, 2178248, 2722810, 4356496, 5445620, 10891240, 21782480]

約数ペア:

[(1, 21782480), (2, 10891240), (4, 5445620), (5, 4356496), (8, 2722810), (10, 2178248), (16, 1361405), (20, 1089124), (29, 751120), (40, 544562), (41, 531280), (58, 375560), (80, 272281), (82, 265640), (116, 187780), (145, 150224), (164, 132820), (205, 106256), (229, 95120), (232, 93890), (290, 75112), (328, 66410), (410, 53128), (458, 47560), (464, 46945), (580, 37556), (656, 33205), (820, 26564), (916, 23780), (1145, 19024), (1160, 18778), (1189, 18320), (1640, 13282), (1832, 11890), (2290, 9512), (2320, 9389), (2378, 9160), (3280, 6641), (3664, 5945), (4580, 4756)]