21087846

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{397}}^1$

素因数の和:645

約数の個数: 48

約数和(自身を含む): 49546224

約数和(自身を除く): 28458378

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 227, 234, 397, 454, 681, 794, 1191, 1362, 2043, 2382, 2951, 3573, 4086, 5161, 5902, 7146, 8853, 10322, 15483, 17706, 26559, 30966, 46449, 53118, 90119, 92898, 180238, 270357, 540714, 811071, 1171547, 1622142, 2343094, 3514641, 7029282, 10543923, 21087846]

約数ペア:

[(1, 21087846), (2, 10543923), (3, 7029282), (6, 3514641), (9, 2343094), (13, 1622142), (18, 1171547), (26, 811071), (39, 540714), (78, 270357), (117, 180238), (227, 92898), (234, 90119), (397, 53118), (454, 46449), (681, 30966), (794, 26559), (1191, 17706), (1362, 15483), (2043, 10322), (2382, 8853), (2951, 7146), (3573, 5902), (4086, 5161)]