259971980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:267

約数の個数: 96

約数和(自身を含む): 585845568

約数和(自身を除く): 325873588

約数列:

[1, 2, 4, 5, 10, 20, 41, 43, 73, 82, 86, 101, 146, 164, 172, 202, 205, 215, 292, 365, 404, 410, 430, 505, 730, 820, 860, 1010, 1460, 1763, 2020, 2993, 3139, 3526, 4141, 4343, 5986, 6278, 7052, 7373, 8282, 8686, 8815, 11972, 12556, 14746, 14965, 15695, 16564, 17372, 17630, 20705, 21715, 29492, 29930, 31390, 35260, 36865, 41410, 43430, 59860, 62780, 73730, 82820, 86860, 128699, 147460, 178063, 257398, 302293, 317039, 356126, 514796, 604586, 634078, 643495, 712252, 890315, 1209172, 1268156, 1286990, 1511465, 1585195, 1780630, 2573980, 3022930, 3170390, 3561260, 6045860, 6340780, 12998599, 25997198, 51994396, 64992995, 129985990, 259971980]

約数ペア:

[(1, 259971980), (2, 129985990), (4, 64992995), (5, 51994396), (10, 25997198), (20, 12998599), (41, 6340780), (43, 6045860), (73, 3561260), (82, 3170390), (86, 3022930), (101, 2573980), (146, 1780630), (164, 1585195), (172, 1511465), (202, 1286990), (205, 1268156), (215, 1209172), (292, 890315), (365, 712252), (404, 643495), (410, 634078), (430, 604586), (505, 514796), (730, 356126), (820, 317039), (860, 302293), (1010, 257398), (1460, 178063), (1763, 147460), (2020, 128699), (2993, 86860), (3139, 82820), (3526, 73730), (4141, 62780), (4343, 59860), (5986, 43430), (6278, 41410), (7052, 36865), (7373, 35260), (8282, 31390), (8686, 29930), (8815, 29492), (11972, 21715), (12556, 20705), (14746, 17630), (14965, 17372), (15695, 16564)]