28414720

素因数分解:

$2^8\times 5^1\times {\mathrm{79}}^1\times {\mathrm{281}}^1$

素因数の和:381

約数の個数: 72

約数和(自身を含む): 69168960

約数和(自身を除く): 40754240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 256, 281, 316, 320, 395, 562, 632, 640, 790, 1124, 1264, 1280, 1405, 1580, 2248, 2528, 2810, 3160, 4496, 5056, 5620, 6320, 8992, 10112, 11240, 12640, 17984, 20224, 22199, 22480, 25280, 35968, 44398, 44960, 50560, 71936, 88796, 89920, 101120, 110995, 177592, 179840, 221990, 355184, 359680, 443980, 710368, 887960, 1420736, 1775920, 2841472, 3551840, 5682944, 7103680, 14207360, 28414720]

約数ペア:

[(1, 28414720), (2, 14207360), (4, 7103680), (5, 5682944), (8, 3551840), (10, 2841472), (16, 1775920), (20, 1420736), (32, 887960), (40, 710368), (64, 443980), (79, 359680), (80, 355184), (128, 221990), (158, 179840), (160, 177592), (256, 110995), (281, 101120), (316, 89920), (320, 88796), (395, 71936), (562, 50560), (632, 44960), (640, 44398), (790, 35968), (1124, 25280), (1264, 22480), (1280, 22199), (1405, 20224), (1580, 17984), (2248, 12640), (2528, 11240), (2810, 10112), (3160, 8992), (4496, 6320), (5056, 5620)]