21419450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1063}}^1$

素因数の和:1119

約数の個数: 48

約数和(自身を含む): 44330496

約数和(自身を除く): 22911046

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 310, 325, 403, 650, 775, 806, 1063, 1550, 2015, 2126, 4030, 5315, 10075, 10630, 13819, 20150, 26575, 27638, 32953, 53150, 65906, 69095, 138190, 164765, 329530, 345475, 428389, 690950, 823825, 856778, 1647650, 2141945, 4283890, 10709725, 21419450]

約数ペア:

[(1, 21419450), (2, 10709725), (5, 4283890), (10, 2141945), (13, 1647650), (25, 856778), (26, 823825), (31, 690950), (50, 428389), (62, 345475), (65, 329530), (130, 164765), (155, 138190), (310, 69095), (325, 65906), (403, 53150), (650, 32953), (775, 27638), (806, 26575), (1063, 20150), (1550, 13819), (2015, 10630), (2126, 10075), (4030, 5315)]