28397720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{563}}^1$

素因数の和:684

約数の個数: 64

約数和(自身を含む): 69642720

約数和(自身を除く): 41245000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 97, 104, 130, 194, 260, 388, 485, 520, 563, 776, 970, 1126, 1261, 1940, 2252, 2522, 2815, 3880, 4504, 5044, 5630, 6305, 7319, 10088, 11260, 12610, 14638, 22520, 25220, 29276, 36595, 50440, 54611, 58552, 73190, 109222, 146380, 218444, 273055, 292760, 436888, 546110, 709943, 1092220, 1419886, 2184440, 2839772, 3549715, 5679544, 7099430, 14198860, 28397720]

約数ペア:

[(1, 28397720), (2, 14198860), (4, 7099430), (5, 5679544), (8, 3549715), (10, 2839772), (13, 2184440), (20, 1419886), (26, 1092220), (40, 709943), (52, 546110), (65, 436888), (97, 292760), (104, 273055), (130, 218444), (194, 146380), (260, 109222), (388, 73190), (485, 58552), (520, 54611), (563, 50440), (776, 36595), (970, 29276), (1126, 25220), (1261, 22520), (1940, 14638), (2252, 12610), (2522, 11260), (2815, 10088), (3880, 7319), (4504, 6305), (5044, 5630)]