21000658185

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{2843}}^1$

素因数の和:2957

約数の個数: 160

約数和(自身を含む): 43012747008

約数和(自身を除く): 22012088823

約数列:

[1, 3, 5, 9, 13, 15, 23, 27, 39, 45, 61, 65, 69, 81, 115, 117, 135, 183, 195, 207, 299, 305, 345, 351, 405, 549, 585, 621, 793, 897, 915, 1035, 1053, 1403, 1495, 1647, 1755, 1863, 2379, 2691, 2745, 2843, 3105, 3965, 4209, 4485, 4941, 5265, 7015, 7137, 8073, 8235, 8529, 9315, 11895, 12627, 13455, 14215, 18239, 21045, 21411, 24219, 24705, 25587, 35685, 36959, 37881, 40365, 42645, 54717, 63135, 64233, 65389, 76761, 91195, 107055, 110877, 113643, 121095, 127935, 164151, 173423, 184795, 189405, 196167, 230283, 273585, 321165, 326945, 332631, 383805, 492453, 520269, 554385, 568215, 588501, 820755, 850057, 867115, 980835, 997893, 1151415, 1477359, 1560807, 1663155, 1765503, 2254499, 2462265, 2550171, 2601345, 2942505, 2993679, 3988729, 4250285, 4682421, 4989465, 5296509, 6763497, 7386795, 7650513, 7804035, 8827515, 11272495, 11966187, 12750855, 14047263, 14968395, 19943645, 20290491, 22951539, 23412105, 26482545, 33817485, 35898561, 38252565, 51853477, 59830935, 60871473, 68854617, 70236315, 101452455, 107695683, 114757695, 155560431, 179492805, 182614419, 259267385, 304357365, 323087049, 344273085, 466681293, 538478415, 777802155, 913072095, 1400043879, 1615435245, 2333406465, 4200131637, 7000219395, 21000658185]

約数ペア:

[(1, 21000658185), (3, 7000219395), (5, 4200131637), (9, 2333406465), (13, 1615435245), (15, 1400043879), (23, 913072095), (27, 777802155), (39, 538478415), (45, 466681293), (61, 344273085), (65, 323087049), (69, 304357365), (81, 259267385), (115, 182614419), (117, 179492805), (135, 155560431), (183, 114757695), (195, 107695683), (207, 101452455), (299, 70236315), (305, 68854617), (345, 60871473), (351, 59830935), (405, 51853477), (549, 38252565), (585, 35898561), (621, 33817485), (793, 26482545), (897, 23412105), (915, 22951539), (1035, 20290491), (1053, 19943645), (1403, 14968395), (1495, 14047263), (1647, 12750855), (1755, 11966187), (1863, 11272495), (2379, 8827515), (2691, 7804035), (2745, 7650513), (2843, 7386795), (3105, 6763497), (3965, 5296509), (4209, 4989465), (4485, 4682421), (4941, 4250285), (5265, 3988729), (7015, 2993679), (7137, 2942505), (8073, 2601345), (8235, 2550171), (8529, 2462265), (9315, 2254499), (11895, 1765503), (12627, 1663155), (13455, 1560807), (14215, 1477359), (18239, 1151415), (21045, 997893), (21411, 980835), (24219, 867115), (24705, 850057), (25587, 820755), (35685, 588501), (36959, 568215), (37881, 554385), (40365, 520269), (42645, 492453), (54717, 383805), (63135, 332631), (64233, 326945), (65389, 321165), (76761, 273585), (91195, 230283), (107055, 196167), (110877, 189405), (113643, 184795), (121095, 173423), (127935, 164151)]