16980908

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{541}}^1$

素因数の和:630

約数の個数: 48

約数和(自身を含む): 36422400

約数和(自身を除く): 19441492

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 59, 76, 118, 133, 236, 266, 413, 532, 541, 826, 1082, 1121, 1652, 2164, 2242, 3787, 4484, 7574, 7847, 10279, 15148, 15694, 20558, 31388, 31919, 41116, 63838, 71953, 127676, 143906, 223433, 287812, 446866, 606461, 893732, 1212922, 2425844, 4245227, 8490454, 16980908]

約数ペア:

[(1, 16980908), (2, 8490454), (4, 4245227), (7, 2425844), (14, 1212922), (19, 893732), (28, 606461), (38, 446866), (59, 287812), (76, 223433), (118, 143906), (133, 127676), (236, 71953), (266, 63838), (413, 41116), (532, 31919), (541, 31388), (826, 20558), (1082, 15694), (1121, 15148), (1652, 10279), (2164, 7847), (2242, 7574), (3787, 4484)]