19809558

素因数分解:

$2^1\times 3^2\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{271}}^1$

素因数の和:441

約数の個数: 48

約数和(自身を含む): 44808192

約数和(自身を除く): 24998634

約数列:

[1, 2, 3, 6, 9, 18, 31, 62, 93, 131, 186, 262, 271, 279, 393, 542, 558, 786, 813, 1179, 1626, 2358, 2439, 4061, 4878, 8122, 8401, 12183, 16802, 24366, 25203, 35501, 36549, 50406, 71002, 73098, 75609, 106503, 151218, 213006, 319509, 639018, 1100531, 2201062, 3301593, 6603186, 9904779, 19809558]

約数ペア:

[(1, 19809558), (2, 9904779), (3, 6603186), (6, 3301593), (9, 2201062), (18, 1100531), (31, 639018), (62, 319509), (93, 213006), (131, 151218), (186, 106503), (262, 75609), (271, 73098), (279, 71002), (393, 50406), (542, 36549), (558, 35501), (786, 25203), (813, 24366), (1179, 16802), (1626, 12183), (2358, 8401), (2439, 8122), (4061, 4878)]