393347840

素因数分解:

$2^8\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{431}}^1$

素因数の和:506

約数の個数: 144

約数和(自身を含む): 1017225216

約数和(自身を除く): 623877376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 32, 40, 46, 62, 64, 80, 92, 115, 124, 128, 155, 160, 184, 230, 248, 256, 310, 320, 368, 431, 460, 496, 620, 640, 713, 736, 862, 920, 992, 1240, 1280, 1426, 1472, 1724, 1840, 1984, 2155, 2480, 2852, 2944, 3448, 3565, 3680, 3968, 4310, 4960, 5704, 5888, 6896, 7130, 7360, 7936, 8620, 9913, 9920, 11408, 13361, 13792, 14260, 14720, 17240, 19826, 19840, 22816, 26722, 27584, 28520, 29440, 34480, 39652, 39680, 45632, 49565, 53444, 55168, 57040, 66805, 68960, 79304, 91264, 99130, 106888, 110336, 114080, 133610, 137920, 158608, 182528, 198260, 213776, 228160, 267220, 275840, 307303, 317216, 396520, 427552, 456320, 534440, 551680, 614606, 634432, 793040, 855104, 912640, 1068880, 1229212, 1268864, 1536515, 1586080, 1710208, 2137760, 2458424, 2537728, 3073030, 3172160, 3420416, 4275520, 4916848, 6146060, 6344320, 8551040, 9833696, 12292120, 12688640, 17102080, 19667392, 24584240, 39334784, 49168480, 78669568, 98336960, 196673920, 393347840]

約数ペア:

[(1, 393347840), (2, 196673920), (4, 98336960), (5, 78669568), (8, 49168480), (10, 39334784), (16, 24584240), (20, 19667392), (23, 17102080), (31, 12688640), (32, 12292120), (40, 9833696), (46, 8551040), (62, 6344320), (64, 6146060), (80, 4916848), (92, 4275520), (115, 3420416), (124, 3172160), (128, 3073030), (155, 2537728), (160, 2458424), (184, 2137760), (230, 1710208), (248, 1586080), (256, 1536515), (310, 1268864), (320, 1229212), (368, 1068880), (431, 912640), (460, 855104), (496, 793040), (620, 634432), (640, 614606), (713, 551680), (736, 534440), (862, 456320), (920, 427552), (992, 396520), (1240, 317216), (1280, 307303), (1426, 275840), (1472, 267220), (1724, 228160), (1840, 213776), (1984, 198260), (2155, 182528), (2480, 158608), (2852, 137920), (2944, 133610), (3448, 114080), (3565, 110336), (3680, 106888), (3968, 99130), (4310, 91264), (4960, 79304), (5704, 68960), (5888, 66805), (6896, 57040), (7130, 55168), (7360, 53444), (7936, 49565), (8620, 45632), (9913, 39680), (9920, 39652), (11408, 34480), (13361, 29440), (13792, 28520), (14260, 27584), (14720, 26722), (17240, 22816), (19826, 19840)]