19301620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1217}}^1$

素因数の和:1300

約数の個数: 48

約数和(自身を含む): 44403408

約数和(自身を除く): 25101788

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 1217, 1220, 1586, 2434, 3172, 3965, 4868, 6085, 7930, 12170, 15821, 15860, 24340, 31642, 63284, 74237, 79105, 148474, 158210, 296948, 316420, 371185, 742370, 965081, 1484740, 1930162, 3860324, 4825405, 9650810, 19301620]

約数ペア:

[(1, 19301620), (2, 9650810), (4, 4825405), (5, 3860324), (10, 1930162), (13, 1484740), (20, 965081), (26, 742370), (52, 371185), (61, 316420), (65, 296948), (122, 158210), (130, 148474), (244, 79105), (260, 74237), (305, 63284), (610, 31642), (793, 24340), (1217, 15860), (1220, 15821), (1586, 12170), (2434, 7930), (3172, 6085), (3965, 4868)]