21724980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{59}}^1$

素因数の和:126

約数の個数: 144

約数和(自身を含む): 69128640

約数和(自身を除く): 47403660

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 19, 20, 30, 34, 38, 51, 57, 59, 60, 68, 76, 85, 95, 102, 114, 118, 170, 177, 190, 204, 228, 236, 255, 285, 295, 323, 340, 354, 361, 380, 510, 570, 590, 646, 708, 722, 885, 969, 1003, 1020, 1083, 1121, 1140, 1180, 1292, 1444, 1615, 1770, 1805, 1938, 2006, 2166, 2242, 3009, 3230, 3363, 3540, 3610, 3876, 4012, 4332, 4484, 4845, 5015, 5415, 5605, 6018, 6137, 6460, 6726, 7220, 9690, 10030, 10830, 11210, 12036, 12274, 13452, 15045, 16815, 18411, 19057, 19380, 20060, 21299, 21660, 22420, 24548, 30090, 30685, 33630, 36822, 38114, 42598, 57171, 60180, 61370, 63897, 67260, 73644, 76228, 85196, 92055, 95285, 106495, 114342, 122740, 127794, 184110, 190570, 212990, 228684, 255588, 285855, 319485, 362083, 368220, 381140, 425980, 571710, 638970, 724166, 1086249, 1143420, 1277940, 1448332, 1810415, 2172498, 3620830, 4344996, 5431245, 7241660, 10862490, 21724980]

約数ペア:

[(1, 21724980), (2, 10862490), (3, 7241660), (4, 5431245), (5, 4344996), (6, 3620830), (10, 2172498), (12, 1810415), (15, 1448332), (17, 1277940), (19, 1143420), (20, 1086249), (30, 724166), (34, 638970), (38, 571710), (51, 425980), (57, 381140), (59, 368220), (60, 362083), (68, 319485), (76, 285855), (85, 255588), (95, 228684), (102, 212990), (114, 190570), (118, 184110), (170, 127794), (177, 122740), (190, 114342), (204, 106495), (228, 95285), (236, 92055), (255, 85196), (285, 76228), (295, 73644), (323, 67260), (340, 63897), (354, 61370), (361, 60180), (380, 57171), (510, 42598), (570, 38114), (590, 36822), (646, 33630), (708, 30685), (722, 30090), (885, 24548), (969, 22420), (1003, 21660), (1020, 21299), (1083, 20060), (1121, 19380), (1140, 19057), (1180, 18411), (1292, 16815), (1444, 15045), (1615, 13452), (1770, 12274), (1805, 12036), (1938, 11210), (2006, 10830), (2166, 10030), (2242, 9690), (3009, 7220), (3230, 6726), (3363, 6460), (3540, 6137), (3610, 6018), (3876, 5605), (4012, 5415), (4332, 5015), (4484, 4845)]