220188040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:215

約数の個数: 128

約数和(自身を含む): 539965440

約数和(自身を除く): 319777400

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 41, 61, 62, 71, 82, 122, 124, 142, 155, 164, 205, 244, 248, 284, 305, 310, 328, 355, 410, 488, 568, 610, 620, 710, 820, 1220, 1240, 1271, 1420, 1640, 1891, 2201, 2440, 2501, 2542, 2840, 2911, 3782, 4331, 4402, 5002, 5084, 5822, 6355, 7564, 8662, 8804, 9455, 10004, 10168, 11005, 11644, 12505, 12710, 14555, 15128, 17324, 17608, 18910, 20008, 21655, 22010, 23288, 25010, 25420, 29110, 34648, 37820, 43310, 44020, 50020, 50840, 58220, 75640, 77531, 86620, 88040, 90241, 100040, 116440, 134261, 155062, 173240, 177571, 180482, 268522, 310124, 355142, 360964, 387655, 451205, 537044, 620248, 671305, 710284, 721928, 775310, 887855, 902410, 1074088, 1342610, 1420568, 1550620, 1775710, 1804820, 2685220, 3101240, 3551420, 3609640, 5370440, 5504701, 7102840, 11009402, 22018804, 27523505, 44037608, 55047010, 110094020, 220188040]

約数ペア:

[(1, 220188040), (2, 110094020), (4, 55047010), (5, 44037608), (8, 27523505), (10, 22018804), (20, 11009402), (31, 7102840), (40, 5504701), (41, 5370440), (61, 3609640), (62, 3551420), (71, 3101240), (82, 2685220), (122, 1804820), (124, 1775710), (142, 1550620), (155, 1420568), (164, 1342610), (205, 1074088), (244, 902410), (248, 887855), (284, 775310), (305, 721928), (310, 710284), (328, 671305), (355, 620248), (410, 537044), (488, 451205), (568, 387655), (610, 360964), (620, 355142), (710, 310124), (820, 268522), (1220, 180482), (1240, 177571), (1271, 173240), (1420, 155062), (1640, 134261), (1891, 116440), (2201, 100040), (2440, 90241), (2501, 88040), (2542, 86620), (2840, 77531), (2911, 75640), (3782, 58220), (4331, 50840), (4402, 50020), (5002, 44020), (5084, 43310), (5822, 37820), (6355, 34648), (7564, 29110), (8662, 25420), (8804, 25010), (9455, 23288), (10004, 22010), (10168, 21655), (11005, 20008), (11644, 18910), (12505, 17608), (12710, 17324), (14555, 15128)]