18961316

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{613}}^1$

素因数の和:684

約数の個数: 48

約数和(自身を含む): 39197760

約数和(自身を除く): 20236444

約数列:

[1, 2, 4, 11, 19, 22, 37, 38, 44, 74, 76, 148, 209, 407, 418, 613, 703, 814, 836, 1226, 1406, 1628, 2452, 2812, 6743, 7733, 11647, 13486, 15466, 22681, 23294, 26972, 30932, 45362, 46588, 90724, 128117, 249491, 256234, 430939, 498982, 512468, 861878, 997964, 1723756, 4740329, 9480658, 18961316]

約数ペア:

[(1, 18961316), (2, 9480658), (4, 4740329), (11, 1723756), (19, 997964), (22, 861878), (37, 512468), (38, 498982), (44, 430939), (74, 256234), (76, 249491), (148, 128117), (209, 90724), (407, 46588), (418, 45362), (613, 30932), (703, 26972), (814, 23294), (836, 22681), (1226, 15466), (1406, 13486), (1628, 11647), (2452, 7733), (2812, 6743)]