18991284

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:189

約数の個数: 96

約数和(自身を含む): 51179520

約数和(自身を除く): 32188236

約数列:

[1, 2, 3, 4, 6, 12, 13, 23, 26, 39, 46, 52, 67, 69, 78, 79, 92, 134, 138, 156, 158, 201, 237, 268, 276, 299, 316, 402, 474, 598, 804, 871, 897, 948, 1027, 1196, 1541, 1742, 1794, 1817, 2054, 2613, 3081, 3082, 3484, 3588, 3634, 4108, 4623, 5226, 5293, 5451, 6162, 6164, 7268, 9246, 10452, 10586, 10902, 12324, 15879, 18492, 20033, 21172, 21804, 23621, 31758, 40066, 47242, 60099, 63516, 68809, 70863, 80132, 94484, 120198, 121739, 137618, 141726, 206427, 240396, 243478, 275236, 283452, 365217, 412854, 486956, 730434, 825708, 1460868, 1582607, 3165214, 4747821, 6330428, 9495642, 18991284]

約数ペア:

[(1, 18991284), (2, 9495642), (3, 6330428), (4, 4747821), (6, 3165214), (12, 1582607), (13, 1460868), (23, 825708), (26, 730434), (39, 486956), (46, 412854), (52, 365217), (67, 283452), (69, 275236), (78, 243478), (79, 240396), (92, 206427), (134, 141726), (138, 137618), (156, 121739), (158, 120198), (201, 94484), (237, 80132), (268, 70863), (276, 68809), (299, 63516), (316, 60099), (402, 47242), (474, 40066), (598, 31758), (804, 23621), (871, 21804), (897, 21172), (948, 20033), (1027, 18492), (1196, 15879), (1541, 12324), (1742, 10902), (1794, 10586), (1817, 10452), (2054, 9246), (2613, 7268), (3081, 6164), (3082, 6162), (3484, 5451), (3588, 5293), (3634, 5226), (4108, 4623)]