81258320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7103}}^1$

素因数の和:7140

約数の個数: 80

約数和(自身を含む): 221985792

約数和(自身を除く): 140727472

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 176, 208, 220, 260, 286, 440, 520, 572, 715, 880, 1040, 1144, 1430, 2288, 2860, 5720, 7103, 11440, 14206, 28412, 35515, 56824, 71030, 78133, 92339, 113648, 142060, 156266, 184678, 284120, 312532, 369356, 390665, 461695, 568240, 625064, 738712, 781330, 923390, 1015729, 1250128, 1477424, 1562660, 1846780, 2031458, 3125320, 3693560, 4062916, 5078645, 6250640, 7387120, 8125832, 10157290, 16251664, 20314580, 40629160, 81258320]

約数ペア:

[(1, 81258320), (2, 40629160), (4, 20314580), (5, 16251664), (8, 10157290), (10, 8125832), (11, 7387120), (13, 6250640), (16, 5078645), (20, 4062916), (22, 3693560), (26, 3125320), (40, 2031458), (44, 1846780), (52, 1562660), (55, 1477424), (65, 1250128), (80, 1015729), (88, 923390), (104, 781330), (110, 738712), (130, 625064), (143, 568240), (176, 461695), (208, 390665), (220, 369356), (260, 312532), (286, 284120), (440, 184678), (520, 156266), (572, 142060), (715, 113648), (880, 92339), (1040, 78133), (1144, 71030), (1430, 56824), (2288, 35515), (2860, 28412), (5720, 14206), (7103, 11440)]