21902412

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{193}}^2$

素因数の和:407

約数の個数: 54

約数和(自身を含む): 59759028

約数和(自身を除く): 37856616

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 147, 193, 196, 294, 386, 579, 588, 772, 1158, 1351, 2316, 2702, 4053, 5404, 8106, 9457, 16212, 18914, 28371, 37249, 37828, 56742, 74498, 111747, 113484, 148996, 223494, 260743, 446988, 521486, 782229, 1042972, 1564458, 1825201, 3128916, 3650402, 5475603, 7300804, 10951206, 21902412]

約数ペア:

[(1, 21902412), (2, 10951206), (3, 7300804), (4, 5475603), (6, 3650402), (7, 3128916), (12, 1825201), (14, 1564458), (21, 1042972), (28, 782229), (42, 521486), (49, 446988), (84, 260743), (98, 223494), (147, 148996), (193, 113484), (196, 111747), (294, 74498), (386, 56742), (579, 37828), (588, 37249), (772, 28371), (1158, 18914), (1351, 16212), (2316, 9457), (2702, 8106), (4053, 5404)]