18242660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{787}}^1$

素因数の和:876

約数の個数: 48

約数和(自身を含む): 41039040

約数和(自身を除く): 22796380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 61, 76, 95, 122, 190, 244, 305, 380, 610, 787, 1159, 1220, 1574, 2318, 3148, 3935, 4636, 5795, 7870, 11590, 14953, 15740, 23180, 29906, 48007, 59812, 74765, 96014, 149530, 192028, 240035, 299060, 480070, 912133, 960140, 1824266, 3648532, 4560665, 9121330, 18242660]

約数ペア:

[(1, 18242660), (2, 9121330), (4, 4560665), (5, 3648532), (10, 1824266), (19, 960140), (20, 912133), (38, 480070), (61, 299060), (76, 240035), (95, 192028), (122, 149530), (190, 96014), (244, 74765), (305, 59812), (380, 48007), (610, 29906), (787, 23180), (1159, 15740), (1220, 14953), (1574, 11590), (2318, 7870), (3148, 5795), (3935, 4636)]