638387680

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{761}}^1$

素因数の和:897

約数の個数: 144

約数和(自身を含む): 1773149616

約数和(自身を除く): 1134761936

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 107, 112, 140, 160, 196, 214, 224, 245, 280, 392, 428, 490, 535, 560, 749, 761, 784, 856, 980, 1070, 1120, 1498, 1522, 1568, 1712, 1960, 2140, 2996, 3044, 3424, 3745, 3805, 3920, 4280, 5243, 5327, 5992, 6088, 7490, 7610, 7840, 8560, 10486, 10654, 11984, 12176, 14980, 15220, 17120, 20972, 21308, 23968, 24352, 26215, 26635, 29960, 30440, 37289, 41944, 42616, 52430, 53270, 59920, 60880, 74578, 81427, 83888, 85232, 104860, 106540, 119840, 121760, 149156, 162854, 167776, 170464, 186445, 209720, 213080, 298312, 325708, 372890, 407135, 419440, 426160, 569989, 596624, 651416, 745780, 814270, 838880, 852320, 1139978, 1193248, 1302832, 1491560, 1628540, 2279956, 2605664, 2849945, 2983120, 3257080, 3989923, 4559912, 5699890, 5966240, 6514160, 7979846, 9119824, 11399780, 13028320, 15959692, 18239648, 19949615, 22799560, 31919384, 39899230, 45599120, 63838768, 79798460, 91198240, 127677536, 159596920, 319193840, 638387680]

約数ペア:

[(1, 638387680), (2, 319193840), (4, 159596920), (5, 127677536), (7, 91198240), (8, 79798460), (10, 63838768), (14, 45599120), (16, 39899230), (20, 31919384), (28, 22799560), (32, 19949615), (35, 18239648), (40, 15959692), (49, 13028320), (56, 11399780), (70, 9119824), (80, 7979846), (98, 6514160), (107, 5966240), (112, 5699890), (140, 4559912), (160, 3989923), (196, 3257080), (214, 2983120), (224, 2849945), (245, 2605664), (280, 2279956), (392, 1628540), (428, 1491560), (490, 1302832), (535, 1193248), (560, 1139978), (749, 852320), (761, 838880), (784, 814270), (856, 745780), (980, 651416), (1070, 596624), (1120, 569989), (1498, 426160), (1522, 419440), (1568, 407135), (1712, 372890), (1960, 325708), (2140, 298312), (2996, 213080), (3044, 209720), (3424, 186445), (3745, 170464), (3805, 167776), (3920, 162854), (4280, 149156), (5243, 121760), (5327, 119840), (5992, 106540), (6088, 104860), (7490, 85232), (7610, 83888), (7840, 81427), (8560, 74578), (10486, 60880), (10654, 59920), (11984, 53270), (12176, 52430), (14980, 42616), (15220, 41944), (17120, 37289), (20972, 30440), (21308, 29960), (23968, 26635), (24352, 26215)]