261353520

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{120997}}^1$

素因数の和:121019

約数の個数: 80

約数和(自身を含む): 900225120

約数和(自身を除く): 638871600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 90, 108, 120, 135, 144, 180, 216, 240, 270, 360, 432, 540, 720, 1080, 2160, 120997, 241994, 362991, 483988, 604985, 725982, 967976, 1088973, 1209970, 1451964, 1814955, 1935952, 2177946, 2419940, 2903928, 3266919, 3629910, 4355892, 4839880, 5444865, 5807856, 6533838, 7259820, 8711784, 9679760, 10889730, 13067676, 14519640, 16334595, 17423568, 21779460, 26135352, 29039280, 32669190, 43558920, 52270704, 65338380, 87117840, 130676760, 261353520]

約数ペア:

[(1, 261353520), (2, 130676760), (3, 87117840), (4, 65338380), (5, 52270704), (6, 43558920), (8, 32669190), (9, 29039280), (10, 26135352), (12, 21779460), (15, 17423568), (16, 16334595), (18, 14519640), (20, 13067676), (24, 10889730), (27, 9679760), (30, 8711784), (36, 7259820), (40, 6533838), (45, 5807856), (48, 5444865), (54, 4839880), (60, 4355892), (72, 3629910), (80, 3266919), (90, 2903928), (108, 2419940), (120, 2177946), (135, 1935952), (144, 1814955), (180, 1451964), (216, 1209970), (240, 1088973), (270, 967976), (360, 725982), (432, 604985), (540, 483988), (720, 362991), (1080, 241994), (2160, 120997)]