28481440

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13693}}^1$

素因数の和:13721

約数の個数: 48

約数和(自身を含む): 72468648

約数和(自身を除く): 43987208

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 13693, 27386, 54772, 68465, 109544, 136930, 178009, 219088, 273860, 356018, 438176, 547720, 712036, 890045, 1095440, 1424072, 1780090, 2190880, 2848144, 3560180, 5696288, 7120360, 14240720, 28481440]

約数ペア:

[(1, 28481440), (2, 14240720), (4, 7120360), (5, 5696288), (8, 3560180), (10, 2848144), (13, 2190880), (16, 1780090), (20, 1424072), (26, 1095440), (32, 890045), (40, 712036), (52, 547720), (65, 438176), (80, 356018), (104, 273860), (130, 219088), (160, 178009), (208, 136930), (260, 109544), (416, 68465), (520, 54772), (1040, 27386), (2080, 13693)]