21311694

素因数分解:

$2^1\times 3^3\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{439}}^1$

素因数の和:510

約数の個数: 64

約数和(自身を含む): 50688000

約数和(自身を除く): 29376306

約数列:

[1, 2, 3, 6, 9, 18, 27, 29, 31, 54, 58, 62, 87, 93, 174, 186, 261, 279, 439, 522, 558, 783, 837, 878, 899, 1317, 1566, 1674, 1798, 2634, 2697, 3951, 5394, 7902, 8091, 11853, 12731, 13609, 16182, 23706, 24273, 25462, 27218, 38193, 40827, 48546, 76386, 81654, 114579, 122481, 229158, 244962, 343737, 367443, 394661, 687474, 734886, 789322, 1183983, 2367966, 3551949, 7103898, 10655847, 21311694]

約数ペア:

[(1, 21311694), (2, 10655847), (3, 7103898), (6, 3551949), (9, 2367966), (18, 1183983), (27, 789322), (29, 734886), (31, 687474), (54, 394661), (58, 367443), (62, 343737), (87, 244962), (93, 229158), (174, 122481), (186, 114579), (261, 81654), (279, 76386), (439, 48546), (522, 40827), (558, 38193), (783, 27218), (837, 25462), (878, 24273), (899, 23706), (1317, 16182), (1566, 13609), (1674, 12731), (1798, 11853), (2634, 8091), (2697, 7902), (3951, 5394)]