20129171825

素因数分解:

$5^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{263}}^1\times {\mathrm{1453}}^1$

素因数の和:1783

約数の個数: 72

約数和(自身を含む): 29844036288

約数和(自身を除く): 9714864463

約数列:

[1, 5, 7, 25, 35, 43, 49, 175, 215, 245, 263, 301, 1075, 1225, 1315, 1453, 1505, 1841, 2107, 6575, 7265, 7525, 9205, 10171, 10535, 11309, 12887, 36325, 46025, 50855, 52675, 56545, 62479, 64435, 71197, 79163, 254275, 282725, 312395, 322175, 355985, 382139, 395815, 437353, 554141, 1561975, 1779925, 1910695, 1979075, 2186765, 2674973, 2770705, 3061471, 9553475, 10933825, 13374865, 13853525, 15307355, 16431977, 18724811, 66874325, 76536775, 82159885, 93624055, 115023839, 410799425, 468120275, 575119195, 805166873, 2875595975, 4025834365, 20129171825]

約数ペア:

[(1, 20129171825), (5, 4025834365), (7, 2875595975), (25, 805166873), (35, 575119195), (43, 468120275), (49, 410799425), (175, 115023839), (215, 93624055), (245, 82159885), (263, 76536775), (301, 66874325), (1075, 18724811), (1225, 16431977), (1315, 15307355), (1453, 13853525), (1505, 13374865), (1841, 10933825), (2107, 9553475), (6575, 3061471), (7265, 2770705), (7525, 2674973), (9205, 2186765), (10171, 1979075), (10535, 1910695), (11309, 1779925), (12887, 1561975), (36325, 554141), (46025, 437353), (50855, 395815), (52675, 382139), (56545, 355985), (62479, 322175), (64435, 312395), (71197, 282725), (79163, 254275)]