81212800

素因数分解:

$2^7\times 5^2\times {\mathrm{41}}^1\times {\mathrm{619}}^1$

素因数の和:684

約数の個数: 96

約数和(自身を含む): 205846200

約数和(自身を除く): 124633400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 41, 50, 64, 80, 82, 100, 128, 160, 164, 200, 205, 320, 328, 400, 410, 619, 640, 656, 800, 820, 1025, 1238, 1312, 1600, 1640, 2050, 2476, 2624, 3095, 3200, 3280, 4100, 4952, 5248, 6190, 6560, 8200, 9904, 12380, 13120, 15475, 16400, 19808, 24760, 25379, 26240, 30950, 32800, 39616, 49520, 50758, 61900, 65600, 79232, 99040, 101516, 123800, 126895, 131200, 198080, 203032, 247600, 253790, 396160, 406064, 495200, 507580, 634475, 812128, 990400, 1015160, 1268950, 1624256, 1980800, 2030320, 2537900, 3248512, 4060640, 5075800, 8121280, 10151600, 16242560, 20303200, 40606400, 81212800]

約数ペア:

[(1, 81212800), (2, 40606400), (4, 20303200), (5, 16242560), (8, 10151600), (10, 8121280), (16, 5075800), (20, 4060640), (25, 3248512), (32, 2537900), (40, 2030320), (41, 1980800), (50, 1624256), (64, 1268950), (80, 1015160), (82, 990400), (100, 812128), (128, 634475), (160, 507580), (164, 495200), (200, 406064), (205, 396160), (320, 253790), (328, 247600), (400, 203032), (410, 198080), (619, 131200), (640, 126895), (656, 123800), (800, 101516), (820, 99040), (1025, 79232), (1238, 65600), (1312, 61900), (1600, 50758), (1640, 49520), (2050, 39616), (2476, 32800), (2624, 30950), (3095, 26240), (3200, 25379), (3280, 24760), (4100, 19808), (4952, 16400), (5248, 15475), (6190, 13120), (6560, 12380), (8200, 9904)]