31801980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{373}}^1$

素因数の和:428

約数の個数: 144

約数和(自身を含む): 107442720

約数和(自身を除く): 75640740

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 29, 30, 35, 42, 49, 58, 60, 70, 84, 87, 98, 105, 116, 140, 145, 147, 174, 196, 203, 210, 245, 290, 294, 348, 373, 406, 420, 435, 490, 580, 588, 609, 735, 746, 812, 870, 980, 1015, 1119, 1218, 1421, 1470, 1492, 1740, 1865, 2030, 2238, 2436, 2611, 2842, 2940, 3045, 3730, 4060, 4263, 4476, 5222, 5595, 5684, 6090, 7105, 7460, 7833, 8526, 10444, 10817, 11190, 12180, 13055, 14210, 15666, 17052, 18277, 21315, 21634, 22380, 26110, 28420, 31332, 32451, 36554, 39165, 42630, 43268, 52220, 54085, 54831, 64902, 73108, 75719, 78330, 85260, 91385, 108170, 109662, 129804, 151438, 156660, 162255, 182770, 216340, 219324, 227157, 274155, 302876, 324510, 365540, 378595, 454314, 530033, 548310, 649020, 757190, 908628, 1060066, 1096620, 1135785, 1514380, 1590099, 2120132, 2271570, 2650165, 3180198, 4543140, 5300330, 6360396, 7950495, 10600660, 15900990, 31801980]

約数ペア:

[(1, 31801980), (2, 15900990), (3, 10600660), (4, 7950495), (5, 6360396), (6, 5300330), (7, 4543140), (10, 3180198), (12, 2650165), (14, 2271570), (15, 2120132), (20, 1590099), (21, 1514380), (28, 1135785), (29, 1096620), (30, 1060066), (35, 908628), (42, 757190), (49, 649020), (58, 548310), (60, 530033), (70, 454314), (84, 378595), (87, 365540), (98, 324510), (105, 302876), (116, 274155), (140, 227157), (145, 219324), (147, 216340), (174, 182770), (196, 162255), (203, 156660), (210, 151438), (245, 129804), (290, 109662), (294, 108170), (348, 91385), (373, 85260), (406, 78330), (420, 75719), (435, 73108), (490, 64902), (580, 54831), (588, 54085), (609, 52220), (735, 43268), (746, 42630), (812, 39165), (870, 36554), (980, 32451), (1015, 31332), (1119, 28420), (1218, 26110), (1421, 22380), (1470, 21634), (1492, 21315), (1740, 18277), (1865, 17052), (2030, 15666), (2238, 14210), (2436, 13055), (2611, 12180), (2842, 11190), (2940, 10817), (3045, 10444), (3730, 8526), (4060, 7833), (4263, 7460), (4476, 7105), (5222, 6090), (5595, 5684)]