178921540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:198

約数の個数: 144

約数和(自身を含む): 461314224

約数和(自身を除く): 282392684

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 49, 61, 70, 73, 82, 98, 122, 140, 146, 164, 196, 205, 244, 245, 287, 292, 305, 365, 410, 427, 490, 511, 574, 610, 730, 820, 854, 980, 1022, 1148, 1220, 1435, 1460, 1708, 2009, 2044, 2135, 2501, 2555, 2870, 2989, 2993, 3577, 4018, 4270, 4453, 5002, 5110, 5740, 5978, 5986, 7154, 8036, 8540, 8906, 10004, 10045, 10220, 11956, 11972, 12505, 14308, 14945, 14965, 17507, 17812, 17885, 20090, 20951, 22265, 25010, 29890, 29930, 31171, 35014, 35770, 40180, 41902, 44530, 50020, 59780, 59860, 62342, 70028, 71540, 83804, 87535, 89060, 104755, 122549, 124684, 146657, 155855, 175070, 182573, 209510, 218197, 245098, 293314, 311710, 350140, 365146, 419020, 436394, 490196, 586628, 612745, 623420, 730292, 733285, 872788, 912865, 1090985, 1225490, 1278011, 1466570, 1825730, 2181970, 2450980, 2556022, 2933140, 3651460, 4363940, 5112044, 6390055, 8946077, 12780110, 17892154, 25560220, 35784308, 44730385, 89460770, 178921540]

約数ペア:

[(1, 178921540), (2, 89460770), (4, 44730385), (5, 35784308), (7, 25560220), (10, 17892154), (14, 12780110), (20, 8946077), (28, 6390055), (35, 5112044), (41, 4363940), (49, 3651460), (61, 2933140), (70, 2556022), (73, 2450980), (82, 2181970), (98, 1825730), (122, 1466570), (140, 1278011), (146, 1225490), (164, 1090985), (196, 912865), (205, 872788), (244, 733285), (245, 730292), (287, 623420), (292, 612745), (305, 586628), (365, 490196), (410, 436394), (427, 419020), (490, 365146), (511, 350140), (574, 311710), (610, 293314), (730, 245098), (820, 218197), (854, 209510), (980, 182573), (1022, 175070), (1148, 155855), (1220, 146657), (1435, 124684), (1460, 122549), (1708, 104755), (2009, 89060), (2044, 87535), (2135, 83804), (2501, 71540), (2555, 70028), (2870, 62342), (2989, 59860), (2993, 59780), (3577, 50020), (4018, 44530), (4270, 41902), (4453, 40180), (5002, 35770), (5110, 35014), (5740, 31171), (5978, 29930), (5986, 29890), (7154, 25010), (8036, 22265), (8540, 20951), (8906, 20090), (10004, 17885), (10045, 17812), (10220, 17507), (11956, 14965), (11972, 14945), (12505, 14308)]