28725760

素因数分解:

$2^9\times 5^1\times 7^2\times {\mathrm{229}}^1$

素因数の和:266

約数の個数: 120

約数和(自身を含む): 80469180

約数和(自身を除く): 51743420

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 229, 245, 256, 280, 320, 392, 448, 458, 490, 512, 560, 640, 784, 896, 916, 980, 1120, 1145, 1280, 1568, 1603, 1792, 1832, 1960, 2240, 2290, 2560, 3136, 3206, 3584, 3664, 3920, 4480, 4580, 6272, 6412, 7328, 7840, 8015, 8960, 9160, 11221, 12544, 12824, 14656, 15680, 16030, 17920, 18320, 22442, 25088, 25648, 29312, 31360, 32060, 36640, 44884, 51296, 56105, 58624, 62720, 64120, 73280, 89768, 102592, 112210, 117248, 125440, 128240, 146560, 179536, 205184, 224420, 256480, 293120, 359072, 410368, 448840, 512960, 586240, 718144, 820736, 897680, 1025920, 1436288, 1795360, 2051840, 2872576, 3590720, 4103680, 5745152, 7181440, 14362880, 28725760]

約数ペア:

[(1, 28725760), (2, 14362880), (4, 7181440), (5, 5745152), (7, 4103680), (8, 3590720), (10, 2872576), (14, 2051840), (16, 1795360), (20, 1436288), (28, 1025920), (32, 897680), (35, 820736), (40, 718144), (49, 586240), (56, 512960), (64, 448840), (70, 410368), (80, 359072), (98, 293120), (112, 256480), (128, 224420), (140, 205184), (160, 179536), (196, 146560), (224, 128240), (229, 125440), (245, 117248), (256, 112210), (280, 102592), (320, 89768), (392, 73280), (448, 64120), (458, 62720), (490, 58624), (512, 56105), (560, 51296), (640, 44884), (784, 36640), (896, 32060), (916, 31360), (980, 29312), (1120, 25648), (1145, 25088), (1280, 22442), (1568, 18320), (1603, 17920), (1792, 16030), (1832, 15680), (1960, 14656), (2240, 12824), (2290, 12544), (2560, 11221), (3136, 9160), (3206, 8960), (3584, 8015), (3664, 7840), (3920, 7328), (4480, 6412), (4580, 6272)]