219781980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{10091}}^1$

素因数の和:10128

約数の個数: 108

約数和(自身を含む): 732860856

約数和(自身を除く): 513078876

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 121, 132, 165, 180, 198, 220, 242, 330, 363, 396, 484, 495, 605, 660, 726, 990, 1089, 1210, 1452, 1815, 1980, 2178, 2420, 3630, 4356, 5445, 7260, 10091, 10890, 20182, 21780, 30273, 40364, 50455, 60546, 90819, 100910, 111001, 121092, 151365, 181638, 201820, 222002, 302730, 333003, 363276, 444004, 454095, 555005, 605460, 666006, 908190, 999009, 1110010, 1221011, 1332012, 1665015, 1816380, 1998018, 2220020, 2442022, 3330030, 3663033, 3996036, 4884044, 4995045, 6105055, 6660060, 7326066, 9990090, 10989099, 12210110, 14652132, 18315165, 19980180, 21978198, 24420220, 36630330, 43956396, 54945495, 73260660, 109890990, 219781980]

約数ペア:

[(1, 219781980), (2, 109890990), (3, 73260660), (4, 54945495), (5, 43956396), (6, 36630330), (9, 24420220), (10, 21978198), (11, 19980180), (12, 18315165), (15, 14652132), (18, 12210110), (20, 10989099), (22, 9990090), (30, 7326066), (33, 6660060), (36, 6105055), (44, 4995045), (45, 4884044), (55, 3996036), (60, 3663033), (66, 3330030), (90, 2442022), (99, 2220020), (110, 1998018), (121, 1816380), (132, 1665015), (165, 1332012), (180, 1221011), (198, 1110010), (220, 999009), (242, 908190), (330, 666006), (363, 605460), (396, 555005), (484, 454095), (495, 444004), (605, 363276), (660, 333003), (726, 302730), (990, 222002), (1089, 201820), (1210, 181638), (1452, 151365), (1815, 121092), (1980, 111001), (2178, 100910), (2420, 90819), (3630, 60546), (4356, 50455), (5445, 40364), (7260, 30273), (10091, 21780), (10890, 20182)]