21239850

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:184

約数の個数: 96

約数和(自身を含む): 55978560

約数和(自身を除く): 34738710

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 37, 43, 50, 74, 75, 86, 89, 111, 129, 150, 178, 185, 215, 222, 258, 267, 370, 430, 445, 534, 555, 645, 890, 925, 1075, 1110, 1290, 1335, 1591, 1850, 2150, 2225, 2670, 2775, 3182, 3225, 3293, 3827, 4450, 4773, 5550, 6450, 6586, 6675, 7654, 7955, 9546, 9879, 11481, 13350, 15910, 16465, 19135, 19758, 22962, 23865, 32930, 38270, 39775, 47730, 49395, 57405, 79550, 82325, 95675, 98790, 114810, 119325, 141599, 164650, 191350, 238650, 246975, 283198, 287025, 424797, 493950, 574050, 707995, 849594, 1415990, 2123985, 3539975, 4247970, 7079950, 10619925, 21239850]

約数ペア:

[(1, 21239850), (2, 10619925), (3, 7079950), (5, 4247970), (6, 3539975), (10, 2123985), (15, 1415990), (25, 849594), (30, 707995), (37, 574050), (43, 493950), (50, 424797), (74, 287025), (75, 283198), (86, 246975), (89, 238650), (111, 191350), (129, 164650), (150, 141599), (178, 119325), (185, 114810), (215, 98790), (222, 95675), (258, 82325), (267, 79550), (370, 57405), (430, 49395), (445, 47730), (534, 39775), (555, 38270), (645, 32930), (890, 23865), (925, 22962), (1075, 19758), (1110, 19135), (1290, 16465), (1335, 15910), (1591, 13350), (1850, 11481), (2150, 9879), (2225, 9546), (2670, 7955), (2775, 7654), (3182, 6675), (3225, 6586), (3293, 6450), (3827, 5550), (4450, 4773)]