21541455

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1601}}^1$

素因数の和:1648

約数の個数: 48

約数和(自身を含む): 41985216

約数和(自身を除く): 20443761

約数列:

[1, 3, 5, 9, 13, 15, 23, 39, 45, 65, 69, 115, 117, 195, 207, 299, 345, 585, 897, 1035, 1495, 1601, 2691, 4485, 4803, 8005, 13455, 14409, 20813, 24015, 36823, 62439, 72045, 104065, 110469, 184115, 187317, 312195, 331407, 478699, 552345, 936585, 1436097, 1657035, 2393495, 4308291, 7180485, 21541455]

約数ペア:

[(1, 21541455), (3, 7180485), (5, 4308291), (9, 2393495), (13, 1657035), (15, 1436097), (23, 936585), (39, 552345), (45, 478699), (65, 331407), (69, 312195), (115, 187317), (117, 184115), (195, 110469), (207, 104065), (299, 72045), (345, 62439), (585, 36823), (897, 24015), (1035, 20813), (1495, 14409), (1601, 13455), (2691, 8005), (4485, 4803)]