19955450

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^2\times {\mathrm{1381}}^1$

素因数の和:1427

約数の個数: 36

約数和(自身を含む): 39457482

約数和(自身を除く): 19502032

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 170, 289, 425, 578, 850, 1381, 1445, 2762, 2890, 6905, 7225, 13810, 14450, 23477, 34525, 46954, 69050, 117385, 234770, 399109, 586925, 798218, 1173850, 1995545, 3991090, 9977725, 19955450]

約数ペア:

[(1, 19955450), (2, 9977725), (5, 3991090), (10, 1995545), (17, 1173850), (25, 798218), (34, 586925), (50, 399109), (85, 234770), (170, 117385), (289, 69050), (425, 46954), (578, 34525), (850, 23477), (1381, 14450), (1445, 13810), (2762, 7225), (2890, 6905)]