21290460982

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{541}}^1\times {\mathrm{751}}^1$

素因数の和:1517

約数の個数: 64

約数和(自身を含む): 38736783360

約数和(自身を除く): 17446322378

約数列:

[1, 2, 7, 14, 19, 38, 133, 197, 266, 394, 541, 751, 1082, 1379, 1502, 2758, 3743, 3787, 5257, 7486, 7574, 10279, 10514, 14269, 20558, 26201, 28538, 52402, 71953, 99883, 106577, 143906, 147947, 199766, 213154, 295894, 406291, 746039, 812582, 1035629, 1492078, 2024963, 2071258, 2810993, 2844037, 4049926, 5621986, 5688074, 7719529, 14174741, 15439058, 19676951, 28349482, 39353902, 54036703, 80039327, 108073406, 160078654, 560275289, 1120550578, 1520747213, 3041494426, 10645230491, 21290460982]

約数ペア:

[(1, 21290460982), (2, 10645230491), (7, 3041494426), (14, 1520747213), (19, 1120550578), (38, 560275289), (133, 160078654), (197, 108073406), (266, 80039327), (394, 54036703), (541, 39353902), (751, 28349482), (1082, 19676951), (1379, 15439058), (1502, 14174741), (2758, 7719529), (3743, 5688074), (3787, 5621986), (5257, 4049926), (7486, 2844037), (7574, 2810993), (10279, 2071258), (10514, 2024963), (14269, 1492078), (20558, 1035629), (26201, 812582), (28538, 746039), (52402, 406291), (71953, 295894), (99883, 213154), (106577, 199766), (143906, 147947)]