81645440

素因数分解:

$2^7\times 5^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:184

約数の個数: 128

約数和(自身を含む): 208202400

約数和(自身を除く): 126556960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 53, 58, 64, 80, 83, 106, 116, 128, 145, 160, 166, 212, 232, 265, 290, 320, 332, 415, 424, 464, 530, 580, 640, 664, 830, 848, 928, 1060, 1160, 1328, 1537, 1660, 1696, 1856, 2120, 2320, 2407, 2656, 3074, 3320, 3392, 3712, 4240, 4399, 4640, 4814, 5312, 6148, 6640, 6784, 7685, 8480, 8798, 9280, 9628, 10624, 12035, 12296, 13280, 15370, 16960, 17596, 18560, 19256, 21995, 24070, 24592, 26560, 30740, 33920, 35192, 38512, 43990, 48140, 49184, 53120, 61480, 70384, 77024, 87980, 96280, 98368, 122960, 127571, 140768, 154048, 175960, 192560, 196736, 245920, 255142, 281536, 308096, 351920, 385120, 491840, 510284, 563072, 637855, 703840, 770240, 983680, 1020568, 1275710, 1407680, 1540480, 2041136, 2551420, 2815360, 4082272, 5102840, 8164544, 10205680, 16329088, 20411360, 40822720, 81645440]

約数ペア:

[(1, 81645440), (2, 40822720), (4, 20411360), (5, 16329088), (8, 10205680), (10, 8164544), (16, 5102840), (20, 4082272), (29, 2815360), (32, 2551420), (40, 2041136), (53, 1540480), (58, 1407680), (64, 1275710), (80, 1020568), (83, 983680), (106, 770240), (116, 703840), (128, 637855), (145, 563072), (160, 510284), (166, 491840), (212, 385120), (232, 351920), (265, 308096), (290, 281536), (320, 255142), (332, 245920), (415, 196736), (424, 192560), (464, 175960), (530, 154048), (580, 140768), (640, 127571), (664, 122960), (830, 98368), (848, 96280), (928, 87980), (1060, 77024), (1160, 70384), (1328, 61480), (1537, 53120), (1660, 49184), (1696, 48140), (1856, 43990), (2120, 38512), (2320, 35192), (2407, 33920), (2656, 30740), (3074, 26560), (3320, 24592), (3392, 24070), (3712, 21995), (4240, 19256), (4399, 18560), (4640, 17596), (4814, 16960), (5312, 15370), (6148, 13280), (6640, 12296), (6784, 12035), (7685, 10624), (8480, 9628), (8798, 9280)]