18319760

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:216

約数の個数: 80

約数和(自身を含む): 44997120

約数和(自身を除く): 26677360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 83, 89, 124, 155, 166, 178, 248, 310, 332, 356, 415, 445, 496, 620, 664, 712, 830, 890, 1240, 1328, 1424, 1660, 1780, 2480, 2573, 2759, 3320, 3560, 5146, 5518, 6640, 7120, 7387, 10292, 11036, 12865, 13795, 14774, 20584, 22072, 25730, 27590, 29548, 36935, 41168, 44144, 51460, 55180, 59096, 73870, 102920, 110360, 118192, 147740, 205840, 220720, 228997, 295480, 457994, 590960, 915988, 1144985, 1831976, 2289970, 3663952, 4579940, 9159880, 18319760]

約数ペア:

[(1, 18319760), (2, 9159880), (4, 4579940), (5, 3663952), (8, 2289970), (10, 1831976), (16, 1144985), (20, 915988), (31, 590960), (40, 457994), (62, 295480), (80, 228997), (83, 220720), (89, 205840), (124, 147740), (155, 118192), (166, 110360), (178, 102920), (248, 73870), (310, 59096), (332, 55180), (356, 51460), (415, 44144), (445, 41168), (496, 36935), (620, 29548), (664, 27590), (712, 25730), (830, 22072), (890, 20584), (1240, 14774), (1328, 13795), (1424, 12865), (1660, 11036), (1780, 10292), (2480, 7387), (2573, 7120), (2759, 6640), (3320, 5518), (3560, 5146)]