640819560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{2939}}^1$

素因数の和:3055

約数の個数: 128

約数和(自身を含む): 2032128000

約数和(自身を除く): 1391308440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 46, 60, 69, 79, 92, 115, 120, 138, 158, 184, 230, 237, 276, 316, 345, 395, 460, 474, 552, 632, 690, 790, 920, 948, 1185, 1380, 1580, 1817, 1896, 2370, 2760, 2939, 3160, 3634, 4740, 5451, 5878, 7268, 8817, 9085, 9480, 10902, 11756, 14536, 14695, 17634, 18170, 21804, 23512, 27255, 29390, 35268, 36340, 43608, 44085, 54510, 58780, 67597, 70536, 72680, 88170, 109020, 117560, 135194, 176340, 202791, 218040, 232181, 270388, 337985, 352680, 405582, 464362, 540776, 675970, 696543, 811164, 928724, 1013955, 1160905, 1351940, 1393086, 1622328, 1857448, 2027910, 2321810, 2703880, 2786172, 3482715, 4055820, 4643620, 5340163, 5572344, 6965430, 8111640, 9287240, 10680326, 13930860, 16020489, 21360652, 26700815, 27861720, 32040978, 42721304, 53401630, 64081956, 80102445, 106803260, 128163912, 160204890, 213606520, 320409780, 640819560]

約数ペア:

[(1, 640819560), (2, 320409780), (3, 213606520), (4, 160204890), (5, 128163912), (6, 106803260), (8, 80102445), (10, 64081956), (12, 53401630), (15, 42721304), (20, 32040978), (23, 27861720), (24, 26700815), (30, 21360652), (40, 16020489), (46, 13930860), (60, 10680326), (69, 9287240), (79, 8111640), (92, 6965430), (115, 5572344), (120, 5340163), (138, 4643620), (158, 4055820), (184, 3482715), (230, 2786172), (237, 2703880), (276, 2321810), (316, 2027910), (345, 1857448), (395, 1622328), (460, 1393086), (474, 1351940), (552, 1160905), (632, 1013955), (690, 928724), (790, 811164), (920, 696543), (948, 675970), (1185, 540776), (1380, 464362), (1580, 405582), (1817, 352680), (1896, 337985), (2370, 270388), (2760, 232181), (2939, 218040), (3160, 202791), (3634, 176340), (4740, 135194), (5451, 117560), (5878, 109020), (7268, 88170), (8817, 72680), (9085, 70536), (9480, 67597), (10902, 58780), (11756, 54510), (14536, 44085), (14695, 43608), (17634, 36340), (18170, 35268), (21804, 29390), (23512, 27255)]