664334720

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{577}}^1$

素因数の和:860

約数の個数: 128

約数和(自身を含む): 1825277760

約数和(自身を除く): 1160943040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 257, 280, 320, 448, 514, 560, 577, 640, 896, 1028, 1120, 1154, 1285, 1799, 2056, 2240, 2308, 2570, 2885, 3598, 4039, 4112, 4480, 4616, 5140, 5770, 7196, 8078, 8224, 8995, 9232, 10280, 11540, 14392, 16156, 16448, 17990, 18464, 20195, 20560, 23080, 28784, 32312, 32896, 35980, 36928, 40390, 41120, 46160, 57568, 64624, 71960, 73856, 80780, 82240, 92320, 115136, 129248, 143920, 148289, 161560, 164480, 184640, 230272, 258496, 287840, 296578, 323120, 369280, 516992, 575680, 593156, 646240, 741445, 1038023, 1151360, 1186312, 1292480, 1482890, 2076046, 2372624, 2584960, 2965780, 4152092, 4745248, 5190115, 5931560, 8304184, 9490496, 10380230, 11863120, 16608368, 18980992, 20760460, 23726240, 33216736, 41520920, 47452480, 66433472, 83041840, 94904960, 132866944, 166083680, 332167360, 664334720]

約数ペア:

[(1, 664334720), (2, 332167360), (4, 166083680), (5, 132866944), (7, 94904960), (8, 83041840), (10, 66433472), (14, 47452480), (16, 41520920), (20, 33216736), (28, 23726240), (32, 20760460), (35, 18980992), (40, 16608368), (56, 11863120), (64, 10380230), (70, 9490496), (80, 8304184), (112, 5931560), (128, 5190115), (140, 4745248), (160, 4152092), (224, 2965780), (257, 2584960), (280, 2372624), (320, 2076046), (448, 1482890), (514, 1292480), (560, 1186312), (577, 1151360), (640, 1038023), (896, 741445), (1028, 646240), (1120, 593156), (1154, 575680), (1285, 516992), (1799, 369280), (2056, 323120), (2240, 296578), (2308, 287840), (2570, 258496), (2885, 230272), (3598, 184640), (4039, 164480), (4112, 161560), (4480, 148289), (4616, 143920), (5140, 129248), (5770, 115136), (7196, 92320), (8078, 82240), (8224, 80780), (8995, 73856), (9232, 71960), (10280, 64624), (11540, 57568), (14392, 46160), (16156, 41120), (16448, 40390), (17990, 36928), (18464, 35980), (20195, 32896), (20560, 32312), (23080, 28784)]