21151740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{233}}^1$

素因数の和:351

約数の個数: 96

約数和(自身を含む): 63685440

約数和(自身を除く): 42533700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 89, 102, 170, 178, 204, 233, 255, 267, 340, 356, 445, 466, 510, 534, 699, 890, 932, 1020, 1068, 1165, 1335, 1398, 1513, 1780, 2330, 2670, 2796, 3026, 3495, 3961, 4539, 4660, 5340, 6052, 6990, 7565, 7922, 9078, 11883, 13980, 15130, 15844, 18156, 19805, 20737, 22695, 23766, 30260, 39610, 41474, 45390, 47532, 59415, 62211, 79220, 82948, 90780, 103685, 118830, 124422, 207370, 237660, 248844, 311055, 352529, 414740, 622110, 705058, 1057587, 1244220, 1410116, 1762645, 2115174, 3525290, 4230348, 5287935, 7050580, 10575870, 21151740]

約数ペア:

[(1, 21151740), (2, 10575870), (3, 7050580), (4, 5287935), (5, 4230348), (6, 3525290), (10, 2115174), (12, 1762645), (15, 1410116), (17, 1244220), (20, 1057587), (30, 705058), (34, 622110), (51, 414740), (60, 352529), (68, 311055), (85, 248844), (89, 237660), (102, 207370), (170, 124422), (178, 118830), (204, 103685), (233, 90780), (255, 82948), (267, 79220), (340, 62211), (356, 59415), (445, 47532), (466, 45390), (510, 41474), (534, 39610), (699, 30260), (890, 23766), (932, 22695), (1020, 20737), (1068, 19805), (1165, 18156), (1335, 15844), (1398, 15130), (1513, 13980), (1780, 11883), (2330, 9078), (2670, 7922), (2796, 7565), (3026, 6990), (3495, 6052), (3961, 5340), (4539, 4660)]