20495965

素因数分解:

$5^1\times 7^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1$

素因数の和:99

約数の個数: 64

約数和(自身を含む): 32832000

約数和(自身を除く): 12336035

約数列:

[1, 5, 7, 17, 19, 35, 37, 49, 85, 95, 119, 133, 185, 245, 259, 323, 343, 595, 629, 665, 703, 833, 931, 1295, 1615, 1715, 1813, 2261, 3145, 3515, 4165, 4403, 4655, 4921, 5831, 6517, 9065, 11305, 11951, 12691, 15827, 22015, 24605, 29155, 30821, 32585, 34447, 59755, 63455, 79135, 83657, 110789, 154105, 172235, 215747, 241129, 418285, 553945, 585599, 1078735, 1205645, 2927995, 4099193, 20495965]

約数ペア:

[(1, 20495965), (5, 4099193), (7, 2927995), (17, 1205645), (19, 1078735), (35, 585599), (37, 553945), (49, 418285), (85, 241129), (95, 215747), (119, 172235), (133, 154105), (185, 110789), (245, 83657), (259, 79135), (323, 63455), (343, 59755), (595, 34447), (629, 32585), (665, 30821), (703, 29155), (833, 24605), (931, 22015), (1295, 15827), (1615, 12691), (1715, 11951), (1813, 11305), (2261, 9065), (3145, 6517), (3515, 5831), (4165, 4921), (4403, 4655)]