197209719

素因数分解:

$3^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1\times {\mathrm{313}}^1$

素因数の和:536

約数の個数: 48

約数和(自身を含む): 333483072

約数和(自身を除く): 136273353

約数列:

[1, 3, 7, 9, 21, 63, 73, 137, 219, 313, 411, 511, 657, 939, 959, 1233, 1533, 2191, 2817, 2877, 4599, 6573, 8631, 10001, 19719, 22849, 30003, 42881, 68547, 70007, 90009, 128643, 159943, 205641, 210021, 300167, 385929, 479829, 630063, 900501, 1439487, 2701503, 3130313, 9390939, 21912191, 28172817, 65736573, 197209719]

約数ペア:

[(1, 197209719), (3, 65736573), (7, 28172817), (9, 21912191), (21, 9390939), (63, 3130313), (73, 2701503), (137, 1439487), (219, 900501), (313, 630063), (411, 479829), (511, 385929), (657, 300167), (939, 210021), (959, 205641), (1233, 159943), (1533, 128643), (2191, 90009), (2817, 70007), (2877, 68547), (4599, 42881), (6573, 30003), (8631, 22849), (10001, 19719)]