259353640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1657}}^1$

素因数の和:1731

約数の個数: 128

約数和(自身を含む): 735356160

約数和(自身を除く): 476002520

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, 1657, 1720, 1820, 2236, 2408, 2795, 3010, 3314, 3640, 3913, 4472, 5590, 6020, 6628, 7826, 8285, 11180, 11599, 12040, 13256, 15652, 16570, 19565, 21541, 22360, 23198, 31304, 33140, 39130, 43082, 46396, 57995, 66280, 71251, 78260, 86164, 92792, 107705, 115990, 142502, 150787, 156520, 172328, 215410, 231980, 285004, 301574, 356255, 430820, 463960, 498757, 570008, 603148, 712510, 753935, 861640, 926263, 997514, 1206296, 1425020, 1507870, 1852526, 1995028, 2493785, 2850040, 3015740, 3705052, 3990056, 4631315, 4987570, 6031480, 6483841, 7410104, 9262630, 9975140, 12967682, 18525260, 19950280, 25935364, 32419205, 37050520, 51870728, 64838410, 129676820, 259353640]

約数ペア:

[(1, 259353640), (2, 129676820), (4, 64838410), (5, 51870728), (7, 37050520), (8, 32419205), (10, 25935364), (13, 19950280), (14, 18525260), (20, 12967682), (26, 9975140), (28, 9262630), (35, 7410104), (40, 6483841), (43, 6031480), (52, 4987570), (56, 4631315), (65, 3990056), (70, 3705052), (86, 3015740), (91, 2850040), (104, 2493785), (130, 1995028), (140, 1852526), (172, 1507870), (182, 1425020), (215, 1206296), (260, 997514), (280, 926263), (301, 861640), (344, 753935), (364, 712510), (430, 603148), (455, 570008), (520, 498757), (559, 463960), (602, 430820), (728, 356255), (860, 301574), (910, 285004), (1118, 231980), (1204, 215410), (1505, 172328), (1657, 156520), (1720, 150787), (1820, 142502), (2236, 115990), (2408, 107705), (2795, 92792), (3010, 86164), (3314, 78260), (3640, 71251), (3913, 66280), (4472, 57995), (5590, 46396), (6020, 43082), (6628, 39130), (7826, 33140), (8285, 31304), (11180, 23198), (11599, 22360), (12040, 21541), (13256, 19565), (15652, 16570)]