245998640

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{281}}^1\times {\mathrm{353}}^1$

素因数の和:678

約数の個数: 80

約数和(自身を含む): 594176256

約数和(自身を除く): 348177616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 281, 310, 353, 496, 562, 620, 706, 1124, 1240, 1405, 1412, 1765, 2248, 2480, 2810, 2824, 3530, 4496, 5620, 5648, 7060, 8711, 10943, 11240, 14120, 17422, 21886, 22480, 28240, 34844, 43555, 43772, 54715, 69688, 87110, 87544, 99193, 109430, 139376, 174220, 175088, 198386, 218860, 348440, 396772, 437720, 495965, 696880, 793544, 875440, 991930, 1587088, 1983860, 3074983, 3967720, 6149966, 7935440, 12299932, 15374915, 24599864, 30749830, 49199728, 61499660, 122999320, 245998640]

約数ペア:

[(1, 245998640), (2, 122999320), (4, 61499660), (5, 49199728), (8, 30749830), (10, 24599864), (16, 15374915), (20, 12299932), (31, 7935440), (40, 6149966), (62, 3967720), (80, 3074983), (124, 1983860), (155, 1587088), (248, 991930), (281, 875440), (310, 793544), (353, 696880), (496, 495965), (562, 437720), (620, 396772), (706, 348440), (1124, 218860), (1240, 198386), (1405, 175088), (1412, 174220), (1765, 139376), (2248, 109430), (2480, 99193), (2810, 87544), (2824, 87110), (3530, 69688), (4496, 54715), (5620, 43772), (5648, 43555), (7060, 34844), (8711, 28240), (10943, 22480), (11240, 21886), (14120, 17422)]