1289451280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{619}}^1\times {\mathrm{2003}}^1$

素因数の和:2648

約数の個数: 80

約数和(自身を含む): 3235417920

約数和(自身を除く): 1945966640

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 619, 1040, 1238, 2003, 2476, 3095, 4006, 4952, 6190, 8012, 8047, 9904, 10015, 12380, 16024, 16094, 20030, 24760, 26039, 32048, 32188, 40060, 40235, 49520, 52078, 64376, 80120, 80470, 104156, 128752, 130195, 160240, 160940, 208312, 260390, 321880, 416624, 520780, 643760, 1041560, 1239857, 2083120, 2479714, 4959428, 6199285, 9918856, 12398570, 16118141, 19837712, 24797140, 32236282, 49594280, 64472564, 80590705, 99188560, 128945128, 161181410, 257890256, 322362820, 644725640, 1289451280]

約数ペア:

[(1, 1289451280), (2, 644725640), (4, 322362820), (5, 257890256), (8, 161181410), (10, 128945128), (13, 99188560), (16, 80590705), (20, 64472564), (26, 49594280), (40, 32236282), (52, 24797140), (65, 19837712), (80, 16118141), (104, 12398570), (130, 9918856), (208, 6199285), (260, 4959428), (520, 2479714), (619, 2083120), (1040, 1239857), (1238, 1041560), (2003, 643760), (2476, 520780), (3095, 416624), (4006, 321880), (4952, 260390), (6190, 208312), (8012, 160940), (8047, 160240), (9904, 130195), (10015, 128752), (12380, 104156), (16024, 80470), (16094, 80120), (20030, 64376), (24760, 52078), (26039, 49520), (32048, 40235), (32188, 40060)]