19712025

素因数分解:

$3^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1$

素因数の和:120

約数の個数: 96

約数和(自身を含む): 40176000

約数和(自身を除く): 20463975

約数列:

[1, 3, 5, 9, 15, 19, 25, 27, 29, 45, 53, 57, 75, 87, 95, 135, 145, 159, 171, 225, 261, 265, 285, 435, 475, 477, 513, 551, 675, 725, 783, 795, 855, 1007, 1305, 1325, 1425, 1431, 1537, 1653, 2175, 2385, 2565, 2755, 3021, 3915, 3975, 4275, 4611, 4959, 5035, 6525, 7155, 7685, 8265, 9063, 11925, 12825, 13775, 13833, 14877, 15105, 19575, 23055, 24795, 25175, 27189, 29203, 35775, 38425, 41325, 41499, 45315, 69165, 74385, 75525, 87609, 115275, 123975, 135945, 146015, 207495, 226575, 262827, 345825, 371925, 438045, 679725, 730075, 788481, 1037475, 1314135, 2190225, 3942405, 6570675, 19712025]

約数ペア:

[(1, 19712025), (3, 6570675), (5, 3942405), (9, 2190225), (15, 1314135), (19, 1037475), (25, 788481), (27, 730075), (29, 679725), (45, 438045), (53, 371925), (57, 345825), (75, 262827), (87, 226575), (95, 207495), (135, 146015), (145, 135945), (159, 123975), (171, 115275), (225, 87609), (261, 75525), (265, 74385), (285, 69165), (435, 45315), (475, 41499), (477, 41325), (513, 38425), (551, 35775), (675, 29203), (725, 27189), (783, 25175), (795, 24795), (855, 23055), (1007, 19575), (1305, 15105), (1325, 14877), (1425, 13833), (1431, 13775), (1537, 12825), (1653, 11925), (2175, 9063), (2385, 8265), (2565, 7685), (2755, 7155), (3021, 6525), (3915, 5035), (3975, 4959), (4275, 4611)]