397553920

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{233}}^1$

素因数の和:328

約数の個数: 144

約数和(自身を含む): 1010161152

約数和(自身を除く): 612607232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 43, 62, 64, 80, 86, 124, 128, 155, 160, 172, 215, 233, 248, 256, 310, 320, 344, 430, 466, 496, 620, 640, 688, 860, 932, 992, 1165, 1240, 1280, 1333, 1376, 1720, 1864, 1984, 2330, 2480, 2666, 2752, 3440, 3728, 3968, 4660, 4960, 5332, 5504, 6665, 6880, 7223, 7456, 7936, 9320, 9920, 10019, 10664, 11008, 13330, 13760, 14446, 14912, 18640, 19840, 20038, 21328, 26660, 27520, 28892, 29824, 36115, 37280, 39680, 40076, 42656, 50095, 53320, 55040, 57784, 59648, 72230, 74560, 80152, 85312, 100190, 106640, 115568, 144460, 149120, 160304, 170624, 200380, 213280, 231136, 288920, 298240, 310589, 320608, 341248, 400760, 426560, 462272, 577840, 621178, 641216, 801520, 853120, 924544, 1155680, 1242356, 1282432, 1552945, 1603040, 1706240, 1849088, 2311360, 2484712, 2564864, 3105890, 3206080, 4622720, 4969424, 6211780, 6412160, 9245440, 9938848, 12423560, 12824320, 19877696, 24847120, 39755392, 49694240, 79510784, 99388480, 198776960, 397553920]

約数ペア:

[(1, 397553920), (2, 198776960), (4, 99388480), (5, 79510784), (8, 49694240), (10, 39755392), (16, 24847120), (20, 19877696), (31, 12824320), (32, 12423560), (40, 9938848), (43, 9245440), (62, 6412160), (64, 6211780), (80, 4969424), (86, 4622720), (124, 3206080), (128, 3105890), (155, 2564864), (160, 2484712), (172, 2311360), (215, 1849088), (233, 1706240), (248, 1603040), (256, 1552945), (310, 1282432), (320, 1242356), (344, 1155680), (430, 924544), (466, 853120), (496, 801520), (620, 641216), (640, 621178), (688, 577840), (860, 462272), (932, 426560), (992, 400760), (1165, 341248), (1240, 320608), (1280, 310589), (1333, 298240), (1376, 288920), (1720, 231136), (1864, 213280), (1984, 200380), (2330, 170624), (2480, 160304), (2666, 149120), (2752, 144460), (3440, 115568), (3728, 106640), (3968, 100190), (4660, 85312), (4960, 80152), (5332, 74560), (5504, 72230), (6665, 59648), (6880, 57784), (7223, 55040), (7456, 53320), (7936, 50095), (9320, 42656), (9920, 40076), (10019, 39680), (10664, 37280), (11008, 36115), (13330, 29824), (13760, 28892), (14446, 27520), (14912, 26660), (18640, 21328), (19840, 20038)]