201721170

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:400

約数の個数: 128

約数和(自身を含む): 574801920

約数和(自身を除く): 373080750

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 43, 70, 86, 89, 105, 129, 178, 210, 215, 251, 258, 267, 301, 430, 445, 502, 534, 602, 623, 645, 753, 890, 903, 1246, 1255, 1290, 1335, 1505, 1506, 1757, 1806, 1869, 2510, 2670, 3010, 3115, 3514, 3738, 3765, 3827, 4515, 5271, 6230, 7530, 7654, 8785, 9030, 9345, 10542, 10793, 11481, 17570, 18690, 19135, 21586, 22339, 22962, 26355, 26789, 32379, 38270, 44678, 52710, 53578, 53965, 57405, 64758, 67017, 75551, 80367, 107930, 111695, 114810, 133945, 134034, 151102, 156373, 160734, 161895, 223390, 226653, 267890, 312746, 323790, 335085, 377755, 401835, 453306, 469119, 670170, 755510, 781865, 803670, 938238, 960577, 1133265, 1563730, 1921154, 2266530, 2345595, 2881731, 4691190, 4802885, 5763462, 6724039, 9605770, 13448078, 14408655, 20172117, 28817310, 33620195, 40344234, 67240390, 100860585, 201721170]

約数ペア:

[(1, 201721170), (2, 100860585), (3, 67240390), (5, 40344234), (6, 33620195), (7, 28817310), (10, 20172117), (14, 14408655), (15, 13448078), (21, 9605770), (30, 6724039), (35, 5763462), (42, 4802885), (43, 4691190), (70, 2881731), (86, 2345595), (89, 2266530), (105, 1921154), (129, 1563730), (178, 1133265), (210, 960577), (215, 938238), (251, 803670), (258, 781865), (267, 755510), (301, 670170), (430, 469119), (445, 453306), (502, 401835), (534, 377755), (602, 335085), (623, 323790), (645, 312746), (753, 267890), (890, 226653), (903, 223390), (1246, 161895), (1255, 160734), (1290, 156373), (1335, 151102), (1505, 134034), (1506, 133945), (1757, 114810), (1806, 111695), (1869, 107930), (2510, 80367), (2670, 75551), (3010, 67017), (3115, 64758), (3514, 57405), (3738, 53965), (3765, 53578), (3827, 52710), (4515, 44678), (5271, 38270), (6230, 32379), (7530, 26789), (7654, 26355), (8785, 22962), (9030, 22339), (9345, 21586), (10542, 19135), (10793, 18690), (11481, 17570)]