28869760

素因数分解:

$2^7\times 5^1\times {\mathrm{79}}^1\times {\mathrm{571}}^1$

素因数の和:669

約数の個数: 64

約数和(自身を含む): 70012800

約数和(自身を除く): 41143040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 316, 320, 395, 571, 632, 640, 790, 1142, 1264, 1580, 2284, 2528, 2855, 3160, 4568, 5056, 5710, 6320, 9136, 10112, 11420, 12640, 18272, 22840, 25280, 36544, 45109, 45680, 50560, 73088, 90218, 91360, 180436, 182720, 225545, 360872, 365440, 451090, 721744, 902180, 1443488, 1804360, 2886976, 3608720, 5773952, 7217440, 14434880, 28869760]

約数ペア:

[(1, 28869760), (2, 14434880), (4, 7217440), (5, 5773952), (8, 3608720), (10, 2886976), (16, 1804360), (20, 1443488), (32, 902180), (40, 721744), (64, 451090), (79, 365440), (80, 360872), (128, 225545), (158, 182720), (160, 180436), (316, 91360), (320, 90218), (395, 73088), (571, 50560), (632, 45680), (640, 45109), (790, 36544), (1142, 25280), (1264, 22840), (1580, 18272), (2284, 12640), (2528, 11420), (2855, 10112), (3160, 9136), (4568, 6320), (5056, 5710)]