81617880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{313}}^1$

素因数の和:421

約数の個数: 128

約数和(自身を含む): 256374720

約数和(自身を除く): 174756840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 41, 53, 60, 82, 106, 120, 123, 159, 164, 205, 212, 246, 265, 313, 318, 328, 410, 424, 492, 530, 615, 626, 636, 795, 820, 939, 984, 1060, 1230, 1252, 1272, 1565, 1590, 1640, 1878, 2120, 2173, 2460, 2504, 3130, 3180, 3756, 4346, 4695, 4920, 6260, 6360, 6519, 7512, 8692, 9390, 10865, 12520, 12833, 13038, 16589, 17384, 18780, 21730, 25666, 26076, 32595, 33178, 37560, 38499, 43460, 49767, 51332, 52152, 64165, 65190, 66356, 76998, 82945, 86920, 99534, 102664, 128330, 130380, 132712, 153996, 165890, 192495, 199068, 248835, 256660, 260760, 307992, 331780, 384990, 398136, 497670, 513320, 663560, 680149, 769980, 995340, 1360298, 1539960, 1990680, 2040447, 2720596, 3400745, 4080894, 5441192, 6801490, 8161788, 10202235, 13602980, 16323576, 20404470, 27205960, 40808940, 81617880]

約数ペア:

[(1, 81617880), (2, 40808940), (3, 27205960), (4, 20404470), (5, 16323576), (6, 13602980), (8, 10202235), (10, 8161788), (12, 6801490), (15, 5441192), (20, 4080894), (24, 3400745), (30, 2720596), (40, 2040447), (41, 1990680), (53, 1539960), (60, 1360298), (82, 995340), (106, 769980), (120, 680149), (123, 663560), (159, 513320), (164, 497670), (205, 398136), (212, 384990), (246, 331780), (265, 307992), (313, 260760), (318, 256660), (328, 248835), (410, 199068), (424, 192495), (492, 165890), (530, 153996), (615, 132712), (626, 130380), (636, 128330), (795, 102664), (820, 99534), (939, 86920), (984, 82945), (1060, 76998), (1230, 66356), (1252, 65190), (1272, 64165), (1565, 52152), (1590, 51332), (1640, 49767), (1878, 43460), (2120, 38499), (2173, 37560), (2460, 33178), (2504, 32595), (3130, 26076), (3180, 25666), (3756, 21730), (4346, 18780), (4695, 17384), (4920, 16589), (6260, 13038), (6360, 12833), (6519, 12520), (7512, 10865), (8692, 9390)]