21659820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{3967}}^1$

素因数の和:3999

約数の個数: 96

約数和(自身を含む): 74661888

約数和(自身を除く): 53002068

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 52, 60, 65, 70, 78, 84, 91, 105, 130, 140, 156, 182, 195, 210, 260, 273, 364, 390, 420, 455, 546, 780, 910, 1092, 1365, 1820, 2730, 3967, 5460, 7934, 11901, 15868, 19835, 23802, 27769, 39670, 47604, 51571, 55538, 59505, 79340, 83307, 103142, 111076, 119010, 138845, 154713, 166614, 206284, 238020, 257855, 277690, 309426, 333228, 360997, 416535, 515710, 555380, 618852, 721994, 773565, 833070, 1031420, 1082991, 1443988, 1547130, 1666140, 1804985, 2165982, 3094260, 3609970, 4331964, 5414955, 7219940, 10829910, 21659820]

約数ペア:

[(1, 21659820), (2, 10829910), (3, 7219940), (4, 5414955), (5, 4331964), (6, 3609970), (7, 3094260), (10, 2165982), (12, 1804985), (13, 1666140), (14, 1547130), (15, 1443988), (20, 1082991), (21, 1031420), (26, 833070), (28, 773565), (30, 721994), (35, 618852), (39, 555380), (42, 515710), (52, 416535), (60, 360997), (65, 333228), (70, 309426), (78, 277690), (84, 257855), (91, 238020), (105, 206284), (130, 166614), (140, 154713), (156, 138845), (182, 119010), (195, 111076), (210, 103142), (260, 83307), (273, 79340), (364, 59505), (390, 55538), (420, 51571), (455, 47604), (546, 39670), (780, 27769), (910, 23802), (1092, 19835), (1365, 15868), (1820, 11901), (2730, 7934), (3967, 5460)]