21990147230

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1\times {\mathrm{10513}}^1$

素因数の和:10749

約数の個数: 64

約数和(自身を含む): 42468148800

約数和(自身を除く): 20478001570

約数列:

[1, 2, 5, 10, 19, 38, 95, 101, 109, 190, 202, 218, 505, 545, 1010, 1090, 1919, 2071, 3838, 4142, 9595, 10355, 10513, 11009, 19190, 20710, 21026, 22018, 52565, 55045, 105130, 110090, 199747, 209171, 399494, 418342, 998735, 1045855, 1061813, 1145917, 1997470, 2091710, 2123626, 2291834, 5309065, 5729585, 10618130, 11459170, 20174447, 21772423, 40348894, 43544846, 100872235, 108862115, 115737617, 201744470, 217724230, 231475234, 578688085, 1157376170, 2199014723, 4398029446, 10995073615, 21990147230]

約数ペア:

[(1, 21990147230), (2, 10995073615), (5, 4398029446), (10, 2199014723), (19, 1157376170), (38, 578688085), (95, 231475234), (101, 217724230), (109, 201744470), (190, 115737617), (202, 108862115), (218, 100872235), (505, 43544846), (545, 40348894), (1010, 21772423), (1090, 20174447), (1919, 11459170), (2071, 10618130), (3838, 5729585), (4142, 5309065), (9595, 2291834), (10355, 2123626), (10513, 2091710), (11009, 1997470), (19190, 1145917), (20710, 1061813), (21026, 1045855), (22018, 998735), (52565, 418342), (55045, 399494), (105130, 209171), (110090, 199747)]