21324940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11717}}^1$

素因数の和:11746

約数の個数: 48

約数和(自身を含む): 55121472

約数和(自身を除く): 33796532

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11717, 23434, 46868, 58585, 82019, 117170, 152321, 164038, 234340, 304642, 328076, 410095, 609284, 761605, 820190, 1066247, 1523210, 1640380, 2132494, 3046420, 4264988, 5331235, 10662470, 21324940]

約数ペア:

[(1, 21324940), (2, 10662470), (4, 5331235), (5, 4264988), (7, 3046420), (10, 2132494), (13, 1640380), (14, 1523210), (20, 1066247), (26, 820190), (28, 761605), (35, 609284), (52, 410095), (65, 328076), (70, 304642), (91, 234340), (130, 164038), (140, 152321), (182, 117170), (260, 82019), (364, 58585), (455, 46868), (910, 23434), (1820, 11717)]