19857825

素因数分解:

$3^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:136

約数の個数: 96

約数和(自身を含む): 41108480

約数和(自身を除く): 21250655

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 31, 39, 45, 65, 73, 75, 93, 117, 135, 155, 195, 219, 225, 279, 325, 351, 365, 403, 465, 585, 657, 675, 775, 837, 949, 975, 1095, 1209, 1395, 1755, 1825, 1971, 2015, 2263, 2325, 2847, 2925, 3285, 3627, 4185, 4745, 5475, 6045, 6789, 6975, 8541, 8775, 9855, 10075, 10881, 11315, 14235, 16425, 18135, 20367, 20925, 23725, 25623, 29419, 30225, 33945, 42705, 49275, 54405, 56575, 61101, 71175, 88257, 90675, 101835, 128115, 147095, 169725, 213525, 264771, 272025, 305505, 441285, 509175, 640575, 735475, 794313, 1323855, 1527525, 2206425, 3971565, 6619275, 19857825]

約数ペア:

[(1, 19857825), (3, 6619275), (5, 3971565), (9, 2206425), (13, 1527525), (15, 1323855), (25, 794313), (27, 735475), (31, 640575), (39, 509175), (45, 441285), (65, 305505), (73, 272025), (75, 264771), (93, 213525), (117, 169725), (135, 147095), (155, 128115), (195, 101835), (219, 90675), (225, 88257), (279, 71175), (325, 61101), (351, 56575), (365, 54405), (403, 49275), (465, 42705), (585, 33945), (657, 30225), (675, 29419), (775, 25623), (837, 23725), (949, 20925), (975, 20367), (1095, 18135), (1209, 16425), (1395, 14235), (1755, 11315), (1825, 10881), (1971, 10075), (2015, 9855), (2263, 8775), (2325, 8541), (2847, 6975), (2925, 6789), (3285, 6045), (3627, 5475), (4185, 4745)]