521455740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{668533}}^1$

素因数の和:668558

約数の個数: 48

約数和(自身を含む): 1572391968

約数和(自身を除く): 1050936228

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 668533, 1337066, 2005599, 2674132, 3342665, 4011198, 6685330, 8022396, 8690929, 10027995, 13370660, 17381858, 20055990, 26072787, 34763716, 40111980, 43454645, 52145574, 86909290, 104291148, 130363935, 173818580, 260727870, 521455740]

約数ペア:

[(1, 521455740), (2, 260727870), (3, 173818580), (4, 130363935), (5, 104291148), (6, 86909290), (10, 52145574), (12, 43454645), (13, 40111980), (15, 34763716), (20, 26072787), (26, 20055990), (30, 17381858), (39, 13370660), (52, 10027995), (60, 8690929), (65, 8022396), (78, 6685330), (130, 4011198), (156, 3342665), (195, 2674132), (260, 2005599), (390, 1337066), (780, 668533)]