18885645

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{257}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 34774272

約数和(自身を除く): 15888627

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 71, 115, 207, 213, 257, 345, 355, 639, 771, 1035, 1065, 1285, 1633, 2313, 3195, 3855, 4899, 5911, 8165, 11565, 14697, 17733, 18247, 24495, 29555, 53199, 54741, 73485, 88665, 91235, 164223, 265995, 273705, 419681, 821115, 1259043, 2098405, 3777129, 6295215, 18885645]

約数ペア:

[(1, 18885645), (3, 6295215), (5, 3777129), (9, 2098405), (15, 1259043), (23, 821115), (45, 419681), (69, 273705), (71, 265995), (115, 164223), (207, 91235), (213, 88665), (257, 73485), (345, 54741), (355, 53199), (639, 29555), (771, 24495), (1035, 18247), (1065, 17733), (1285, 14697), (1633, 11565), (2313, 8165), (3195, 5911), (3855, 4899)]