20493438

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{421}}^1$

素因数の和:513

約数の個数: 64

約数和(自身を含む): 50234880

約数和(自身を除く): 29741442

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 61, 114, 122, 133, 183, 266, 366, 399, 421, 427, 798, 842, 854, 1159, 1263, 1281, 2318, 2526, 2562, 2947, 3477, 5894, 6954, 7999, 8113, 8841, 15998, 16226, 17682, 23997, 24339, 25681, 47994, 48678, 51362, 55993, 77043, 111986, 154086, 167979, 179767, 335958, 359534, 487939, 539301, 975878, 1078602, 1463817, 2927634, 3415573, 6831146, 10246719, 20493438]

約数ペア:

[(1, 20493438), (2, 10246719), (3, 6831146), (6, 3415573), (7, 2927634), (14, 1463817), (19, 1078602), (21, 975878), (38, 539301), (42, 487939), (57, 359534), (61, 335958), (114, 179767), (122, 167979), (133, 154086), (183, 111986), (266, 77043), (366, 55993), (399, 51362), (421, 48678), (427, 47994), (798, 25681), (842, 24339), (854, 23997), (1159, 17682), (1263, 16226), (1281, 15998), (2318, 8841), (2526, 8113), (2562, 7999), (2947, 6954), (3477, 5894)]