21537250

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1$

素因数の和:452

約数の個数: 64

約数和(自身を含む): 47683584

約数和(自身を除く): 26146334

約数列:

[1, 2, 5, 7, 10, 14, 25, 31, 35, 50, 62, 70, 125, 155, 175, 217, 250, 310, 350, 397, 434, 775, 794, 875, 1085, 1550, 1750, 1985, 2170, 2779, 3875, 3970, 5425, 5558, 7750, 9925, 10850, 12307, 13895, 19850, 24614, 27125, 27790, 49625, 54250, 61535, 69475, 86149, 99250, 123070, 138950, 172298, 307675, 347375, 430745, 615350, 694750, 861490, 1538375, 2153725, 3076750, 4307450, 10768625, 21537250]

約数ペア:

[(1, 21537250), (2, 10768625), (5, 4307450), (7, 3076750), (10, 2153725), (14, 1538375), (25, 861490), (31, 694750), (35, 615350), (50, 430745), (62, 347375), (70, 307675), (125, 172298), (155, 138950), (175, 123070), (217, 99250), (250, 86149), (310, 69475), (350, 61535), (397, 54250), (434, 49625), (775, 27790), (794, 27125), (875, 24614), (1085, 19850), (1550, 13895), (1750, 12307), (1985, 10850), (2170, 9925), (2779, 7750), (3875, 5558), (3970, 5425)]