18676880

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{443}}^1$

素因数の和:504

約数の個数: 80

約数和(自身を含む): 47568384

約数和(自身を除く): 28891504

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 31, 34, 40, 62, 68, 80, 85, 124, 136, 155, 170, 248, 272, 310, 340, 443, 496, 527, 620, 680, 886, 1054, 1240, 1360, 1772, 2108, 2215, 2480, 2635, 3544, 4216, 4430, 5270, 7088, 7531, 8432, 8860, 10540, 13733, 15062, 17720, 21080, 27466, 30124, 35440, 37655, 42160, 54932, 60248, 68665, 75310, 109864, 120496, 137330, 150620, 219728, 233461, 274660, 301240, 466922, 549320, 602480, 933844, 1098640, 1167305, 1867688, 2334610, 3735376, 4669220, 9338440, 18676880]

約数ペア:

[(1, 18676880), (2, 9338440), (4, 4669220), (5, 3735376), (8, 2334610), (10, 1867688), (16, 1167305), (17, 1098640), (20, 933844), (31, 602480), (34, 549320), (40, 466922), (62, 301240), (68, 274660), (80, 233461), (85, 219728), (124, 150620), (136, 137330), (155, 120496), (170, 109864), (248, 75310), (272, 68665), (310, 60248), (340, 54932), (443, 42160), (496, 37655), (527, 35440), (620, 30124), (680, 27466), (886, 21080), (1054, 17720), (1240, 15062), (1360, 13733), (1772, 10540), (2108, 8860), (2215, 8432), (2480, 7531), (2635, 7088), (3544, 5270), (4216, 4430)]