20689648

素因数分解:

$2^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1$

素因数の和:206

約数の個数: 80

約数和(自身を含む): 48568320

約数和(自身を除く): 27878672

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 56, 59, 62, 101, 112, 118, 124, 202, 217, 236, 248, 404, 413, 434, 472, 496, 707, 808, 826, 868, 944, 1414, 1616, 1652, 1736, 1829, 2828, 3131, 3304, 3472, 3658, 5656, 5959, 6262, 6608, 7316, 11312, 11918, 12524, 12803, 14632, 21917, 23836, 25048, 25606, 29264, 41713, 43834, 47672, 50096, 51212, 83426, 87668, 95344, 102424, 166852, 175336, 184729, 204848, 333704, 350672, 369458, 667408, 738916, 1293103, 1477832, 2586206, 2955664, 5172412, 10344824, 20689648]

約数ペア:

[(1, 20689648), (2, 10344824), (4, 5172412), (7, 2955664), (8, 2586206), (14, 1477832), (16, 1293103), (28, 738916), (31, 667408), (56, 369458), (59, 350672), (62, 333704), (101, 204848), (112, 184729), (118, 175336), (124, 166852), (202, 102424), (217, 95344), (236, 87668), (248, 83426), (404, 51212), (413, 50096), (434, 47672), (472, 43834), (496, 41713), (707, 29264), (808, 25606), (826, 25048), (868, 23836), (944, 21917), (1414, 14632), (1616, 12803), (1652, 12524), (1736, 11918), (1829, 11312), (2828, 7316), (3131, 6608), (3304, 6262), (3472, 5959), (3658, 5656)]