157216720

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{311}}^1$

素因数の和:484

約数の個数: 80

約数和(自身を含む): 376047360

約数和(自身を除く): 218830640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 89, 142, 178, 284, 311, 355, 356, 445, 568, 622, 710, 712, 890, 1136, 1244, 1420, 1424, 1555, 1780, 2488, 2840, 3110, 3560, 4976, 5680, 6220, 6319, 7120, 12440, 12638, 22081, 24880, 25276, 27679, 31595, 44162, 50552, 55358, 63190, 88324, 101104, 110405, 110716, 126380, 138395, 176648, 220810, 221432, 252760, 276790, 353296, 441620, 442864, 505520, 553580, 883240, 1107160, 1766480, 1965209, 2214320, 3930418, 7860836, 9826045, 15721672, 19652090, 31443344, 39304180, 78608360, 157216720]

約数ペア:

[(1, 157216720), (2, 78608360), (4, 39304180), (5, 31443344), (8, 19652090), (10, 15721672), (16, 9826045), (20, 7860836), (40, 3930418), (71, 2214320), (80, 1965209), (89, 1766480), (142, 1107160), (178, 883240), (284, 553580), (311, 505520), (355, 442864), (356, 441620), (445, 353296), (568, 276790), (622, 252760), (710, 221432), (712, 220810), (890, 176648), (1136, 138395), (1244, 126380), (1420, 110716), (1424, 110405), (1555, 101104), (1780, 88324), (2488, 63190), (2840, 55358), (3110, 50552), (3560, 44162), (4976, 31595), (5680, 27679), (6220, 25276), (6319, 24880), (7120, 22081), (12440, 12638)]