20512101545

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{128857}}^1$

素因数の和:128985

約数の個数: 32

約数和(自身を含む): 27709624320

約数和(自身を除く): 7197522775

約数列:

[1, 5, 13, 31, 65, 79, 155, 395, 403, 1027, 2015, 2449, 5135, 12245, 31837, 128857, 159185, 644285, 1675141, 3994567, 8375705, 10179703, 19972835, 50898515, 51929371, 132336139, 259646855, 315570793, 661680695, 1577853965, 4102420309, 20512101545]

約数ペア:

[(1, 20512101545), (5, 4102420309), (13, 1577853965), (31, 661680695), (65, 315570793), (79, 259646855), (155, 132336139), (395, 51929371), (403, 50898515), (1027, 19972835), (2015, 10179703), (2449, 8375705), (5135, 3994567), (12245, 1675141), (31837, 644285), (128857, 159185)]