261930560

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{541}}^1$

素因数の和:664

約数の個数: 112

約数和(自身を含む): 669066480

約数和(自身を除く): 407135920

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 89, 136, 160, 170, 178, 272, 320, 340, 356, 445, 541, 544, 680, 712, 890, 1082, 1088, 1360, 1424, 1513, 1780, 2164, 2705, 2720, 2848, 3026, 3560, 4328, 5410, 5440, 5696, 6052, 7120, 7565, 8656, 9197, 10820, 12104, 14240, 15130, 17312, 18394, 21640, 24208, 28480, 30260, 34624, 36788, 43280, 45985, 48149, 48416, 60520, 73576, 86560, 91970, 96298, 96832, 121040, 147152, 173120, 183940, 192596, 240745, 242080, 294304, 367880, 385192, 481490, 484160, 588608, 735760, 770384, 818533, 962980, 1471520, 1540768, 1637066, 1925960, 2943040, 3081536, 3274132, 3851920, 4092665, 6548264, 7703840, 8185330, 13096528, 15407680, 16370660, 26193056, 32741320, 52386112, 65482640, 130965280, 261930560]

約数ペア:

[(1, 261930560), (2, 130965280), (4, 65482640), (5, 52386112), (8, 32741320), (10, 26193056), (16, 16370660), (17, 15407680), (20, 13096528), (32, 8185330), (34, 7703840), (40, 6548264), (64, 4092665), (68, 3851920), (80, 3274132), (85, 3081536), (89, 2943040), (136, 1925960), (160, 1637066), (170, 1540768), (178, 1471520), (272, 962980), (320, 818533), (340, 770384), (356, 735760), (445, 588608), (541, 484160), (544, 481490), (680, 385192), (712, 367880), (890, 294304), (1082, 242080), (1088, 240745), (1360, 192596), (1424, 183940), (1513, 173120), (1780, 147152), (2164, 121040), (2705, 96832), (2720, 96298), (2848, 91970), (3026, 86560), (3560, 73576), (4328, 60520), (5410, 48416), (5440, 48149), (5696, 45985), (6052, 43280), (7120, 36788), (7565, 34624), (8656, 30260), (9197, 28480), (10820, 24208), (12104, 21640), (14240, 18394), (15130, 17312)]