21991512

素因数分解:

$2^3\times 3^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1663}}^1$

素因数の和:1720

約数の個数: 64

約数和(自身を含む): 59904000

約数和(自身を除く): 37912488

約数列:

[1, 2, 3, 4, 6, 8, 12, 19, 24, 29, 38, 57, 58, 76, 87, 114, 116, 152, 174, 228, 232, 348, 456, 551, 696, 1102, 1653, 1663, 2204, 3306, 3326, 4408, 4989, 6612, 6652, 9978, 13224, 13304, 19956, 31597, 39912, 48227, 63194, 94791, 96454, 126388, 144681, 189582, 192908, 252776, 289362, 379164, 385816, 578724, 758328, 916313, 1157448, 1832626, 2748939, 3665252, 5497878, 7330504, 10995756, 21991512]

約数ペア:

[(1, 21991512), (2, 10995756), (3, 7330504), (4, 5497878), (6, 3665252), (8, 2748939), (12, 1832626), (19, 1157448), (24, 916313), (29, 758328), (38, 578724), (57, 385816), (58, 379164), (76, 289362), (87, 252776), (114, 192908), (116, 189582), (152, 144681), (174, 126388), (228, 96454), (232, 94791), (348, 63194), (456, 48227), (551, 39912), (696, 31597), (1102, 19956), (1653, 13304), (1663, 13224), (2204, 9978), (3306, 6652), (3326, 6612), (4408, 4989)]