31220420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{97}}^1$

素因数の和:154

約数の個数: 144

約数和(自身を含む): 87588480

約数和(自身を除く): 56368060

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 19, 20, 22, 28, 35, 38, 44, 55, 70, 76, 77, 95, 97, 110, 121, 133, 140, 154, 190, 194, 209, 220, 242, 266, 308, 380, 385, 388, 418, 484, 485, 532, 605, 665, 679, 770, 836, 847, 970, 1045, 1067, 1210, 1330, 1358, 1463, 1540, 1694, 1843, 1940, 2090, 2134, 2299, 2420, 2660, 2716, 2926, 3388, 3395, 3686, 4180, 4235, 4268, 4598, 5335, 5852, 6790, 7315, 7372, 7469, 8470, 9196, 9215, 10670, 11495, 11737, 12901, 13580, 14630, 14938, 16093, 16940, 18430, 20273, 21340, 22990, 23474, 25802, 29260, 29876, 32186, 36860, 37345, 40546, 45980, 46948, 51604, 58685, 64372, 64505, 74690, 80465, 81092, 82159, 101365, 117370, 129010, 141911, 149380, 160930, 164318, 202730, 223003, 234740, 258020, 283822, 321860, 328636, 405460, 410795, 446006, 567644, 709555, 821590, 892012, 1115015, 1419110, 1561021, 1643180, 2230030, 2838220, 3122042, 4460060, 6244084, 7805105, 15610210, 31220420]

約数ペア:

[(1, 31220420), (2, 15610210), (4, 7805105), (5, 6244084), (7, 4460060), (10, 3122042), (11, 2838220), (14, 2230030), (19, 1643180), (20, 1561021), (22, 1419110), (28, 1115015), (35, 892012), (38, 821590), (44, 709555), (55, 567644), (70, 446006), (76, 410795), (77, 405460), (95, 328636), (97, 321860), (110, 283822), (121, 258020), (133, 234740), (140, 223003), (154, 202730), (190, 164318), (194, 160930), (209, 149380), (220, 141911), (242, 129010), (266, 117370), (308, 101365), (380, 82159), (385, 81092), (388, 80465), (418, 74690), (484, 64505), (485, 64372), (532, 58685), (605, 51604), (665, 46948), (679, 45980), (770, 40546), (836, 37345), (847, 36860), (970, 32186), (1045, 29876), (1067, 29260), (1210, 25802), (1330, 23474), (1358, 22990), (1463, 21340), (1540, 20273), (1694, 18430), (1843, 16940), (1940, 16093), (2090, 14938), (2134, 14630), (2299, 13580), (2420, 12901), (2660, 11737), (2716, 11495), (2926, 10670), (3388, 9215), (3395, 9196), (3686, 8470), (4180, 7469), (4235, 7372), (4268, 7315), (4598, 6790), (5335, 5852)]