20686993405

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{1153}}^1\times {\mathrm{1249}}^1$

素因数の和:2450

約数の個数: 48

約数和(自身を含む): 28509570000

約数和(自身を除く): 7822576595

約数列:

[1, 5, 13, 17, 65, 85, 169, 221, 845, 1105, 1153, 1249, 2873, 5765, 6245, 14365, 14989, 16237, 19601, 21233, 74945, 81185, 98005, 106165, 194857, 211081, 254813, 276029, 974285, 1055405, 1274065, 1380145, 1440097, 3312569, 3588377, 7200485, 16562845, 17941885, 18721261, 24481649, 93606305, 122408245, 243376393, 318261437, 1216881965, 1591307185, 4137398681, 20686993405]

約数ペア:

[(1, 20686993405), (5, 4137398681), (13, 1591307185), (17, 1216881965), (65, 318261437), (85, 243376393), (169, 122408245), (221, 93606305), (845, 24481649), (1105, 18721261), (1153, 17941885), (1249, 16562845), (2873, 7200485), (5765, 3588377), (6245, 3312569), (14365, 1440097), (14989, 1380145), (16237, 1274065), (19601, 1055405), (21233, 974285), (74945, 276029), (81185, 254813), (98005, 211081), (106165, 194857)]