81724240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{439}}^1$

素因数の和:644

約数の個数: 80

約数和(自身を含む): 206236800

約数和(自身を除く): 124512560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 179, 208, 260, 358, 439, 520, 716, 878, 895, 1040, 1432, 1756, 1790, 2195, 2327, 2864, 3512, 3580, 4390, 4654, 5707, 7024, 7160, 8780, 9308, 11414, 11635, 14320, 17560, 18616, 22828, 23270, 28535, 35120, 37232, 45656, 46540, 57070, 78581, 91312, 93080, 114140, 157162, 186160, 228280, 314324, 392905, 456560, 628648, 785810, 1021553, 1257296, 1571620, 2043106, 3143240, 4086212, 5107765, 6286480, 8172424, 10215530, 16344848, 20431060, 40862120, 81724240]

約数ペア:

[(1, 81724240), (2, 40862120), (4, 20431060), (5, 16344848), (8, 10215530), (10, 8172424), (13, 6286480), (16, 5107765), (20, 4086212), (26, 3143240), (40, 2043106), (52, 1571620), (65, 1257296), (80, 1021553), (104, 785810), (130, 628648), (179, 456560), (208, 392905), (260, 314324), (358, 228280), (439, 186160), (520, 157162), (716, 114140), (878, 93080), (895, 91312), (1040, 78581), (1432, 57070), (1756, 46540), (1790, 45656), (2195, 37232), (2327, 35120), (2864, 28535), (3512, 23270), (3580, 22828), (4390, 18616), (4654, 17560), (5707, 14320), (7024, 11635), (7160, 11414), (8780, 9308)]