21739928

素因数分解:

$2^3\times 7^2\times {\mathrm{31}}^1\times {\mathrm{1789}}^1$

素因数の和:1840

約数の個数: 48

約数和(自身を含む): 48974400

約数和(自身を除く): 27234472

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 49, 56, 62, 98, 124, 196, 217, 248, 392, 434, 868, 1519, 1736, 1789, 3038, 3578, 6076, 7156, 12152, 12523, 14312, 25046, 50092, 55459, 87661, 100184, 110918, 175322, 221836, 350644, 388213, 443672, 701288, 776426, 1552852, 2717491, 3105704, 5434982, 10869964, 21739928]

約数ペア:

[(1, 21739928), (2, 10869964), (4, 5434982), (7, 3105704), (8, 2717491), (14, 1552852), (28, 776426), (31, 701288), (49, 443672), (56, 388213), (62, 350644), (98, 221836), (124, 175322), (196, 110918), (217, 100184), (248, 87661), (392, 55459), (434, 50092), (868, 25046), (1519, 14312), (1736, 12523), (1789, 12152), (3038, 7156), (3578, 6076)]