21254778

素因数分解:

$2^1\times 3^3\times {\mathrm{31}}^1\times {\mathrm{12697}}^1$

素因数の和:12739

約数の個数: 32

約数和(自身を含む): 48760320

約数和(自身を除く): 27505542

約数列:

[1, 2, 3, 6, 9, 18, 27, 31, 54, 62, 93, 186, 279, 558, 837, 1674, 12697, 25394, 38091, 76182, 114273, 228546, 342819, 393607, 685638, 787214, 1180821, 2361642, 3542463, 7084926, 10627389, 21254778]

約数ペア:

[(1, 21254778), (2, 10627389), (3, 7084926), (6, 3542463), (9, 2361642), (18, 1180821), (27, 787214), (31, 685638), (54, 393607), (62, 342819), (93, 228546), (186, 114273), (279, 76182), (558, 38091), (837, 25394), (1674, 12697)]