81008000

素因数分解:

$2^7\times 5^3\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:173

約数の個数: 128

約数和(自身を含む): 207174240

約数和(自身を除く): 126166240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 61, 64, 80, 83, 100, 122, 125, 128, 160, 166, 200, 244, 250, 305, 320, 332, 400, 415, 488, 500, 610, 640, 664, 800, 830, 976, 1000, 1220, 1328, 1525, 1600, 1660, 1952, 2000, 2075, 2440, 2656, 3050, 3200, 3320, 3904, 4000, 4150, 4880, 5063, 5312, 6100, 6640, 7625, 7808, 8000, 8300, 9760, 10126, 10375, 10624, 12200, 13280, 15250, 16000, 16600, 19520, 20252, 20750, 24400, 25315, 26560, 30500, 33200, 39040, 40504, 41500, 48800, 50630, 53120, 61000, 66400, 81008, 83000, 97600, 101260, 122000, 126575, 132800, 162016, 166000, 195200, 202520, 244000, 253150, 265600, 324032, 332000, 405040, 488000, 506300, 632875, 648064, 664000, 810080, 976000, 1012600, 1265750, 1328000, 1620160, 2025200, 2531500, 3240320, 4050400, 5063000, 8100800, 10126000, 16201600, 20252000, 40504000, 81008000]

約数ペア:

[(1, 81008000), (2, 40504000), (4, 20252000), (5, 16201600), (8, 10126000), (10, 8100800), (16, 5063000), (20, 4050400), (25, 3240320), (32, 2531500), (40, 2025200), (50, 1620160), (61, 1328000), (64, 1265750), (80, 1012600), (83, 976000), (100, 810080), (122, 664000), (125, 648064), (128, 632875), (160, 506300), (166, 488000), (200, 405040), (244, 332000), (250, 324032), (305, 265600), (320, 253150), (332, 244000), (400, 202520), (415, 195200), (488, 166000), (500, 162016), (610, 132800), (640, 126575), (664, 122000), (800, 101260), (830, 97600), (976, 83000), (1000, 81008), (1220, 66400), (1328, 61000), (1525, 53120), (1600, 50630), (1660, 48800), (1952, 41500), (2000, 40504), (2075, 39040), (2440, 33200), (2656, 30500), (3050, 26560), (3200, 25315), (3320, 24400), (3904, 20750), (4000, 20252), (4150, 19520), (4880, 16600), (5063, 16000), (5312, 15250), (6100, 13280), (6640, 12200), (7625, 10624), (7808, 10375), (8000, 10126), (8300, 9760)]