18076720

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:278

約数の個数: 80

約数和(自身を含む): 44782848

約数和(自身を除く): 26706128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 37, 40, 62, 74, 80, 124, 148, 155, 185, 197, 248, 296, 310, 370, 394, 496, 592, 620, 740, 788, 985, 1147, 1240, 1480, 1576, 1970, 2294, 2480, 2960, 3152, 3940, 4588, 5735, 6107, 7289, 7880, 9176, 11470, 12214, 14578, 15760, 18352, 22940, 24428, 29156, 30535, 36445, 45880, 48856, 58312, 61070, 72890, 91760, 97712, 116624, 122140, 145780, 225959, 244280, 291560, 451918, 488560, 583120, 903836, 1129795, 1807672, 2259590, 3615344, 4519180, 9038360, 18076720]

約数ペア:

[(1, 18076720), (2, 9038360), (4, 4519180), (5, 3615344), (8, 2259590), (10, 1807672), (16, 1129795), (20, 903836), (31, 583120), (37, 488560), (40, 451918), (62, 291560), (74, 244280), (80, 225959), (124, 145780), (148, 122140), (155, 116624), (185, 97712), (197, 91760), (248, 72890), (296, 61070), (310, 58312), (370, 48856), (394, 45880), (496, 36445), (592, 30535), (620, 29156), (740, 24428), (788, 22940), (985, 18352), (1147, 15760), (1240, 14578), (1480, 12214), (1576, 11470), (1970, 9176), (2294, 7880), (2480, 7289), (2960, 6107), (3152, 5735), (3940, 4588)]