219028240

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{63671}}^1$

素因数の和:63727

約数の個数: 40

約数和(自身を含む): 521091648

約数和(自身を除く): 302063408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 63671, 127342, 254684, 318355, 509368, 636710, 1018736, 1273420, 2546840, 2737853, 5093680, 5475706, 10951412, 13689265, 21902824, 27378530, 43805648, 54757060, 109514120, 219028240]

約数ペア:

[(1, 219028240), (2, 109514120), (4, 54757060), (5, 43805648), (8, 27378530), (10, 21902824), (16, 13689265), (20, 10951412), (40, 5475706), (43, 5093680), (80, 2737853), (86, 2546840), (172, 1273420), (215, 1018736), (344, 636710), (430, 509368), (688, 318355), (860, 254684), (1720, 127342), (3440, 63671)]