253778140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:320

約数の個数: 144

約数和(自身を含む): 682117632

約数和(自身を除く): 428339492

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 71, 77, 110, 121, 140, 142, 154, 211, 220, 242, 284, 308, 355, 385, 422, 484, 497, 605, 710, 770, 781, 844, 847, 994, 1055, 1210, 1420, 1477, 1540, 1562, 1694, 1988, 2110, 2321, 2420, 2485, 2954, 3124, 3388, 3905, 4220, 4235, 4642, 4970, 5467, 5908, 7385, 7810, 8470, 8591, 9284, 9940, 10934, 11605, 14770, 14981, 15620, 16247, 16940, 17182, 21868, 23210, 25531, 27335, 29540, 29962, 32494, 34364, 42955, 46420, 51062, 54670, 59924, 60137, 64988, 74905, 81235, 85910, 102124, 104867, 109340, 120274, 127655, 149810, 162470, 164791, 171820, 178717, 209734, 240548, 255310, 299620, 300685, 324940, 329582, 357434, 419468, 510620, 524335, 601370, 659164, 714868, 823955, 893585, 1048670, 1153537, 1202740, 1647910, 1787170, 1812701, 2097340, 2307074, 3295820, 3574340, 3625402, 4614148, 5767685, 7250804, 9063505, 11535370, 12688907, 18127010, 23070740, 25377814, 36254020, 50755628, 63444535, 126889070, 253778140]

約数ペア:

[(1, 253778140), (2, 126889070), (4, 63444535), (5, 50755628), (7, 36254020), (10, 25377814), (11, 23070740), (14, 18127010), (20, 12688907), (22, 11535370), (28, 9063505), (35, 7250804), (44, 5767685), (55, 4614148), (70, 3625402), (71, 3574340), (77, 3295820), (110, 2307074), (121, 2097340), (140, 1812701), (142, 1787170), (154, 1647910), (211, 1202740), (220, 1153537), (242, 1048670), (284, 893585), (308, 823955), (355, 714868), (385, 659164), (422, 601370), (484, 524335), (497, 510620), (605, 419468), (710, 357434), (770, 329582), (781, 324940), (844, 300685), (847, 299620), (994, 255310), (1055, 240548), (1210, 209734), (1420, 178717), (1477, 171820), (1540, 164791), (1562, 162470), (1694, 149810), (1988, 127655), (2110, 120274), (2321, 109340), (2420, 104867), (2485, 102124), (2954, 85910), (3124, 81235), (3388, 74905), (3905, 64988), (4220, 60137), (4235, 59924), (4642, 54670), (4970, 51062), (5467, 46420), (5908, 42955), (7385, 34364), (7810, 32494), (8470, 29962), (8591, 29540), (9284, 27335), (9940, 25531), (10934, 23210), (11605, 21868), (14770, 17182), (14981, 16940), (15620, 16247)]