81449928

素因数分解:

$2^3\times 3^3\times 7^1\times {\mathrm{103}}^1\times {\mathrm{523}}^1$

素因数の和:648

約数の個数: 128

約数和(自身を含む): 261580800

約数和(自身を除く): 180130872

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 54, 56, 63, 72, 84, 103, 108, 126, 168, 189, 206, 216, 252, 309, 378, 412, 504, 523, 618, 721, 756, 824, 927, 1046, 1236, 1442, 1512, 1569, 1854, 2092, 2163, 2472, 2781, 2884, 3138, 3661, 3708, 4184, 4326, 4707, 5562, 5768, 6276, 6489, 7322, 7416, 8652, 9414, 10983, 11124, 12552, 12978, 14121, 14644, 17304, 18828, 19467, 21966, 22248, 25956, 28242, 29288, 32949, 37656, 38934, 43932, 51912, 53869, 56484, 65898, 77868, 87864, 98847, 107738, 112968, 131796, 155736, 161607, 197694, 215476, 263592, 323214, 377083, 395388, 430952, 484821, 646428, 754166, 790776, 969642, 1131249, 1292856, 1454463, 1508332, 1939284, 2262498, 2908926, 3016664, 3393747, 3878568, 4524996, 5817852, 6787494, 9049992, 10181241, 11635704, 13574988, 20362482, 27149976, 40724964, 81449928]

約数ペア:

[(1, 81449928), (2, 40724964), (3, 27149976), (4, 20362482), (6, 13574988), (7, 11635704), (8, 10181241), (9, 9049992), (12, 6787494), (14, 5817852), (18, 4524996), (21, 3878568), (24, 3393747), (27, 3016664), (28, 2908926), (36, 2262498), (42, 1939284), (54, 1508332), (56, 1454463), (63, 1292856), (72, 1131249), (84, 969642), (103, 790776), (108, 754166), (126, 646428), (168, 484821), (189, 430952), (206, 395388), (216, 377083), (252, 323214), (309, 263592), (378, 215476), (412, 197694), (504, 161607), (523, 155736), (618, 131796), (721, 112968), (756, 107738), (824, 98847), (927, 87864), (1046, 77868), (1236, 65898), (1442, 56484), (1512, 53869), (1569, 51912), (1854, 43932), (2092, 38934), (2163, 37656), (2472, 32949), (2781, 29288), (2884, 28242), (3138, 25956), (3661, 22248), (3708, 21966), (4184, 19467), (4326, 18828), (4707, 17304), (5562, 14644), (5768, 14121), (6276, 12978), (6489, 12552), (7322, 11124), (7416, 10983), (8652, 9414)]