21977865

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1789}}^1$

素因数の和:1823

約数の個数: 64

約数和(自身を含む): 48115200

約数和(自身を除く): 26137335

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 27, 35, 39, 45, 63, 65, 91, 105, 117, 135, 189, 195, 273, 315, 351, 455, 585, 819, 945, 1365, 1755, 1789, 2457, 4095, 5367, 8945, 12285, 12523, 16101, 23257, 26835, 37569, 48303, 62615, 69771, 80505, 112707, 116285, 162799, 187845, 209313, 241515, 338121, 348855, 488397, 563535, 627939, 813995, 1046565, 1465191, 1690605, 2441985, 3139695, 4395573, 7325955, 21977865]

約数ペア:

[(1, 21977865), (3, 7325955), (5, 4395573), (7, 3139695), (9, 2441985), (13, 1690605), (15, 1465191), (21, 1046565), (27, 813995), (35, 627939), (39, 563535), (45, 488397), (63, 348855), (65, 338121), (91, 241515), (105, 209313), (117, 187845), (135, 162799), (189, 116285), (195, 112707), (273, 80505), (315, 69771), (351, 62615), (455, 48303), (585, 37569), (819, 26835), (945, 23257), (1365, 16101), (1755, 12523), (1789, 12285), (2457, 8945), (4095, 5367)]