978889760

素因数分解:

$2^5\times 5^1\times {\mathrm{37}}^2\times {\mathrm{41}}^1\times {\mathrm{109}}^1$

素因数の和:239

約数の個数: 144

約数和(自身を含む): 2457128520

約数和(自身を除く): 1478238760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 41, 74, 80, 82, 109, 148, 160, 164, 185, 205, 218, 296, 328, 370, 410, 436, 545, 592, 656, 740, 820, 872, 1090, 1184, 1312, 1369, 1480, 1517, 1640, 1744, 2180, 2738, 2960, 3034, 3280, 3488, 4033, 4360, 4469, 5476, 5920, 6068, 6560, 6845, 7585, 8066, 8720, 8938, 10952, 12136, 13690, 15170, 16132, 17440, 17876, 20165, 21904, 22345, 24272, 27380, 30340, 32264, 35752, 40330, 43808, 44690, 48544, 54760, 56129, 60680, 64528, 71504, 80660, 89380, 109520, 112258, 121360, 129056, 143008, 149221, 161320, 165353, 178760, 219040, 224516, 242720, 280645, 298442, 322640, 330706, 357520, 449032, 561290, 596884, 645280, 661412, 715040, 746105, 826765, 898064, 1122580, 1193768, 1322824, 1492210, 1653530, 1796128, 2245160, 2387536, 2645648, 2984420, 3307060, 4490320, 4775072, 5291296, 5968840, 6118061, 6614120, 8980640, 11937680, 12236122, 13228240, 23875360, 24472244, 26456480, 30590305, 48944488, 61180610, 97888976, 122361220, 195777952, 244722440, 489444880, 978889760]

約数ペア:

[(1, 978889760), (2, 489444880), (4, 244722440), (5, 195777952), (8, 122361220), (10, 97888976), (16, 61180610), (20, 48944488), (32, 30590305), (37, 26456480), (40, 24472244), (41, 23875360), (74, 13228240), (80, 12236122), (82, 11937680), (109, 8980640), (148, 6614120), (160, 6118061), (164, 5968840), (185, 5291296), (205, 4775072), (218, 4490320), (296, 3307060), (328, 2984420), (370, 2645648), (410, 2387536), (436, 2245160), (545, 1796128), (592, 1653530), (656, 1492210), (740, 1322824), (820, 1193768), (872, 1122580), (1090, 898064), (1184, 826765), (1312, 746105), (1369, 715040), (1480, 661412), (1517, 645280), (1640, 596884), (1744, 561290), (2180, 449032), (2738, 357520), (2960, 330706), (3034, 322640), (3280, 298442), (3488, 280645), (4033, 242720), (4360, 224516), (4469, 219040), (5476, 178760), (5920, 165353), (6068, 161320), (6560, 149221), (6845, 143008), (7585, 129056), (8066, 121360), (8720, 112258), (8938, 109520), (10952, 89380), (12136, 80660), (13690, 71504), (15170, 64528), (16132, 60680), (17440, 56129), (17876, 54760), (20165, 48544), (21904, 44690), (22345, 43808), (24272, 40330), (27380, 35752), (30340, 32264)]