28351990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^2\times {\mathrm{109}}^1$

素因数の和:209

約数の個数: 48

約数和(自身を含む): 55717200

約数和(自身を除く): 27365210

約数列:

[1, 2, 5, 10, 19, 37, 38, 74, 95, 109, 185, 190, 218, 370, 545, 703, 1090, 1369, 1406, 2071, 2738, 3515, 4033, 4142, 6845, 7030, 8066, 10355, 13690, 20165, 20710, 26011, 40330, 52022, 76627, 130055, 149221, 153254, 260110, 298442, 383135, 746105, 766270, 1492210, 2835199, 5670398, 14175995, 28351990]

約数ペア:

[(1, 28351990), (2, 14175995), (5, 5670398), (10, 2835199), (19, 1492210), (37, 766270), (38, 746105), (74, 383135), (95, 298442), (109, 260110), (185, 153254), (190, 149221), (218, 130055), (370, 76627), (545, 52022), (703, 40330), (1090, 26011), (1369, 20710), (1406, 20165), (2071, 13690), (2738, 10355), (3515, 8066), (4033, 7030), (4142, 6845)]