81940000

素因数分解:

$2^5\times 5^4\times {\mathrm{17}}^1\times {\mathrm{241}}^1$

素因数の和:288

約数の個数: 120

約数和(自身を含む): 214328268

約数和(自身を除く): 132388268

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 32, 34, 40, 50, 68, 80, 85, 100, 125, 136, 160, 170, 200, 241, 250, 272, 340, 400, 425, 482, 500, 544, 625, 680, 800, 850, 964, 1000, 1205, 1250, 1360, 1700, 1928, 2000, 2125, 2410, 2500, 2720, 3400, 3856, 4000, 4097, 4250, 4820, 5000, 6025, 6800, 7712, 8194, 8500, 9640, 10000, 10625, 12050, 13600, 16388, 17000, 19280, 20000, 20485, 21250, 24100, 30125, 32776, 34000, 38560, 40970, 42500, 48200, 60250, 65552, 68000, 81940, 85000, 96400, 102425, 120500, 131104, 150625, 163880, 170000, 192800, 204850, 241000, 301250, 327760, 340000, 409700, 482000, 512125, 602500, 655520, 819400, 964000, 1024250, 1205000, 1638800, 2048500, 2410000, 2560625, 3277600, 4097000, 4820000, 5121250, 8194000, 10242500, 16388000, 20485000, 40970000, 81940000]

約数ペア:

[(1, 81940000), (2, 40970000), (4, 20485000), (5, 16388000), (8, 10242500), (10, 8194000), (16, 5121250), (17, 4820000), (20, 4097000), (25, 3277600), (32, 2560625), (34, 2410000), (40, 2048500), (50, 1638800), (68, 1205000), (80, 1024250), (85, 964000), (100, 819400), (125, 655520), (136, 602500), (160, 512125), (170, 482000), (200, 409700), (241, 340000), (250, 327760), (272, 301250), (340, 241000), (400, 204850), (425, 192800), (482, 170000), (500, 163880), (544, 150625), (625, 131104), (680, 120500), (800, 102425), (850, 96400), (964, 85000), (1000, 81940), (1205, 68000), (1250, 65552), (1360, 60250), (1700, 48200), (1928, 42500), (2000, 40970), (2125, 38560), (2410, 34000), (2500, 32776), (2720, 30125), (3400, 24100), (3856, 21250), (4000, 20485), (4097, 20000), (4250, 19280), (4820, 17000), (5000, 16388), (6025, 13600), (6800, 12050), (7712, 10625), (8194, 10000), (8500, 9640)]