21350520

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{373}}^1$

素因数の和:446

約数の個数: 128

約数和(自身を含む): 72705600

約数和(自身を除く): 51355080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 53, 54, 60, 72, 90, 106, 108, 120, 135, 159, 180, 212, 216, 265, 270, 318, 360, 373, 424, 477, 530, 540, 636, 746, 795, 954, 1060, 1080, 1119, 1272, 1431, 1492, 1590, 1865, 1908, 2120, 2238, 2385, 2862, 2984, 3180, 3357, 3730, 3816, 4476, 4770, 5595, 5724, 6360, 6714, 7155, 7460, 8952, 9540, 10071, 11190, 11448, 13428, 14310, 14920, 16785, 19080, 19769, 20142, 22380, 26856, 28620, 33570, 39538, 40284, 44760, 50355, 57240, 59307, 67140, 79076, 80568, 98845, 100710, 118614, 134280, 158152, 177921, 197690, 201420, 237228, 296535, 355842, 395380, 402840, 474456, 533763, 593070, 711684, 790760, 889605, 1067526, 1186140, 1423368, 1779210, 2135052, 2372280, 2668815, 3558420, 4270104, 5337630, 7116840, 10675260, 21350520]

約数ペア:

[(1, 21350520), (2, 10675260), (3, 7116840), (4, 5337630), (5, 4270104), (6, 3558420), (8, 2668815), (9, 2372280), (10, 2135052), (12, 1779210), (15, 1423368), (18, 1186140), (20, 1067526), (24, 889605), (27, 790760), (30, 711684), (36, 593070), (40, 533763), (45, 474456), (53, 402840), (54, 395380), (60, 355842), (72, 296535), (90, 237228), (106, 201420), (108, 197690), (120, 177921), (135, 158152), (159, 134280), (180, 118614), (212, 100710), (216, 98845), (265, 80568), (270, 79076), (318, 67140), (360, 59307), (373, 57240), (424, 50355), (477, 44760), (530, 40284), (540, 39538), (636, 33570), (746, 28620), (795, 26856), (954, 22380), (1060, 20142), (1080, 19769), (1119, 19080), (1272, 16785), (1431, 14920), (1492, 14310), (1590, 13428), (1865, 11448), (1908, 11190), (2120, 10071), (2238, 9540), (2385, 8952), (2862, 7460), (2984, 7155), (3180, 6714), (3357, 6360), (3730, 5724), (3816, 5595), (4476, 4770)]