21698798

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:153

約数の個数: 64

約数和(自身を含む): 40711680

約数和(自身を除く): 19012882

約数列:

[1, 2, 11, 19, 22, 23, 37, 38, 46, 61, 74, 122, 209, 253, 407, 418, 437, 506, 671, 703, 814, 851, 874, 1159, 1342, 1403, 1406, 1702, 2257, 2318, 2806, 4514, 4807, 7733, 9361, 9614, 12749, 15433, 15466, 16169, 18722, 24827, 25498, 26657, 30866, 32338, 42883, 49654, 51911, 53314, 85766, 103822, 177859, 293227, 355718, 471713, 571021, 586454, 943426, 986309, 1142042, 1972618, 10849399, 21698798]

約数ペア:

[(1, 21698798), (2, 10849399), (11, 1972618), (19, 1142042), (22, 986309), (23, 943426), (37, 586454), (38, 571021), (46, 471713), (61, 355718), (74, 293227), (122, 177859), (209, 103822), (253, 85766), (407, 53314), (418, 51911), (437, 49654), (506, 42883), (671, 32338), (703, 30866), (814, 26657), (851, 25498), (874, 24827), (1159, 18722), (1342, 16169), (1403, 15466), (1406, 15433), (1702, 12749), (2257, 9614), (2318, 9361), (2806, 7733), (4514, 4807)]