28701440

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1319}}^1$

素因数の和:1357

約数の個数: 72

約数和(自身を含む): 72848160

約数和(自身を除く): 44146720

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 544, 640, 680, 1088, 1280, 1319, 1360, 2176, 2638, 2720, 4352, 5276, 5440, 6595, 10552, 10880, 13190, 21104, 21760, 22423, 26380, 42208, 44846, 52760, 84416, 89692, 105520, 112115, 168832, 179384, 211040, 224230, 337664, 358768, 422080, 448460, 717536, 844160, 896920, 1435072, 1688320, 1793840, 2870144, 3587680, 5740288, 7175360, 14350720, 28701440]

約数ペア:

[(1, 28701440), (2, 14350720), (4, 7175360), (5, 5740288), (8, 3587680), (10, 2870144), (16, 1793840), (17, 1688320), (20, 1435072), (32, 896920), (34, 844160), (40, 717536), (64, 448460), (68, 422080), (80, 358768), (85, 337664), (128, 224230), (136, 211040), (160, 179384), (170, 168832), (256, 112115), (272, 105520), (320, 89692), (340, 84416), (544, 52760), (640, 44846), (680, 42208), (1088, 26380), (1280, 22423), (1319, 21760), (1360, 21104), (2176, 13190), (2638, 10880), (2720, 10552), (4352, 6595), (5276, 5440)]