421513820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{241}}^1$

素因数の和:332

約数の個数: 144

約数和(自身を含む): 1130399424

約数和(自身を除く): 708885604

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 31, 35, 52, 62, 65, 70, 91, 124, 130, 140, 155, 182, 217, 241, 260, 310, 364, 403, 434, 455, 482, 620, 806, 868, 910, 961, 964, 1085, 1205, 1612, 1687, 1820, 1922, 2015, 2170, 2410, 2821, 3133, 3374, 3844, 4030, 4340, 4805, 4820, 5642, 6266, 6727, 6748, 7471, 8060, 8435, 9610, 11284, 12493, 12532, 13454, 14105, 14942, 15665, 16870, 19220, 21931, 24986, 26908, 28210, 29884, 31330, 33635, 33740, 37355, 43862, 49972, 52297, 56420, 62465, 62660, 67270, 74710, 87451, 87724, 97123, 104594, 109655, 124930, 134540, 149420, 174902, 194246, 209188, 219310, 231601, 249860, 261485, 349804, 388492, 437255, 438620, 463202, 485615, 522970, 679861, 874510, 926404, 971230, 1045940, 1158005, 1359722, 1621207, 1749020, 1942460, 2316010, 2719444, 3010813, 3242414, 3399305, 4632020, 6021626, 6484828, 6798610, 8106035, 12043252, 13597220, 15054065, 16212070, 21075691, 30108130, 32424140, 42151382, 60216260, 84302764, 105378455, 210756910, 421513820]

約数ペア:

[(1, 421513820), (2, 210756910), (4, 105378455), (5, 84302764), (7, 60216260), (10, 42151382), (13, 32424140), (14, 30108130), (20, 21075691), (26, 16212070), (28, 15054065), (31, 13597220), (35, 12043252), (52, 8106035), (62, 6798610), (65, 6484828), (70, 6021626), (91, 4632020), (124, 3399305), (130, 3242414), (140, 3010813), (155, 2719444), (182, 2316010), (217, 1942460), (241, 1749020), (260, 1621207), (310, 1359722), (364, 1158005), (403, 1045940), (434, 971230), (455, 926404), (482, 874510), (620, 679861), (806, 522970), (868, 485615), (910, 463202), (961, 438620), (964, 437255), (1085, 388492), (1205, 349804), (1612, 261485), (1687, 249860), (1820, 231601), (1922, 219310), (2015, 209188), (2170, 194246), (2410, 174902), (2821, 149420), (3133, 134540), (3374, 124930), (3844, 109655), (4030, 104594), (4340, 97123), (4805, 87724), (4820, 87451), (5642, 74710), (6266, 67270), (6727, 62660), (6748, 62465), (7471, 56420), (8060, 52297), (8435, 49972), (9610, 43862), (11284, 37355), (12493, 33740), (12532, 33635), (13454, 31330), (14105, 29884), (14942, 28210), (15665, 26908), (16870, 24986), (19220, 21931)]