251840680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1609}}^1$

素因数の和:1683

約数の個数: 128

約数和(自身を含む): 714067200

約数和(自身を除く): 462226520

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 43, 52, 56, 65, 70, 86, 91, 104, 130, 140, 172, 182, 215, 260, 280, 301, 344, 364, 430, 455, 520, 559, 602, 728, 860, 910, 1118, 1204, 1505, 1609, 1720, 1820, 2236, 2408, 2795, 3010, 3218, 3640, 3913, 4472, 5590, 6020, 6436, 7826, 8045, 11180, 11263, 12040, 12872, 15652, 16090, 19565, 20917, 22360, 22526, 31304, 32180, 39130, 41834, 45052, 56315, 64360, 69187, 78260, 83668, 90104, 104585, 112630, 138374, 146419, 156520, 167336, 209170, 225260, 276748, 292838, 345935, 418340, 450520, 484309, 553496, 585676, 691870, 732095, 836680, 899431, 968618, 1171352, 1383740, 1464190, 1798862, 1937236, 2421545, 2767480, 2928380, 3597724, 3874472, 4497155, 4843090, 5856760, 6296017, 7195448, 8994310, 9686180, 12592034, 17988620, 19372360, 25184068, 31480085, 35977240, 50368136, 62960170, 125920340, 251840680]

約数ペア:

[(1, 251840680), (2, 125920340), (4, 62960170), (5, 50368136), (7, 35977240), (8, 31480085), (10, 25184068), (13, 19372360), (14, 17988620), (20, 12592034), (26, 9686180), (28, 8994310), (35, 7195448), (40, 6296017), (43, 5856760), (52, 4843090), (56, 4497155), (65, 3874472), (70, 3597724), (86, 2928380), (91, 2767480), (104, 2421545), (130, 1937236), (140, 1798862), (172, 1464190), (182, 1383740), (215, 1171352), (260, 968618), (280, 899431), (301, 836680), (344, 732095), (364, 691870), (430, 585676), (455, 553496), (520, 484309), (559, 450520), (602, 418340), (728, 345935), (860, 292838), (910, 276748), (1118, 225260), (1204, 209170), (1505, 167336), (1609, 156520), (1720, 146419), (1820, 138374), (2236, 112630), (2408, 104585), (2795, 90104), (3010, 83668), (3218, 78260), (3640, 69187), (3913, 64360), (4472, 56315), (5590, 45052), (6020, 41834), (6436, 39130), (7826, 32180), (8045, 31304), (11180, 22526), (11263, 22360), (12040, 20917), (12872, 19565), (15652, 16090)]