21901908

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{13723}}^1$

素因数の和:13756

約数の個数: 48

約数和(自身を含む): 61483520

約数和(自身を除く): 39581612

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 19, 21, 28, 38, 42, 57, 76, 84, 114, 133, 228, 266, 399, 532, 798, 1596, 13723, 27446, 41169, 54892, 82338, 96061, 164676, 192122, 260737, 288183, 384244, 521474, 576366, 782211, 1042948, 1152732, 1564422, 1825159, 3128844, 3650318, 5475477, 7300636, 10950954, 21901908]

約数ペア:

[(1, 21901908), (2, 10950954), (3, 7300636), (4, 5475477), (6, 3650318), (7, 3128844), (12, 1825159), (14, 1564422), (19, 1152732), (21, 1042948), (28, 782211), (38, 576366), (42, 521474), (57, 384244), (76, 288183), (84, 260737), (114, 192122), (133, 164676), (228, 96061), (266, 82338), (399, 54892), (532, 41169), (798, 27446), (1596, 13723)]