21937140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1$

素因数の和:206

約数の個数: 144

約数和(自身を含む): 72176832

約数和(自身を除く): 50239692

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 67, 68, 85, 90, 102, 107, 134, 153, 170, 180, 201, 204, 214, 255, 268, 306, 321, 335, 340, 402, 428, 510, 535, 603, 612, 642, 670, 765, 804, 963, 1005, 1020, 1070, 1139, 1206, 1284, 1340, 1530, 1605, 1819, 1926, 2010, 2140, 2278, 2412, 3015, 3060, 3210, 3417, 3638, 3852, 4020, 4556, 4815, 5457, 5695, 6030, 6420, 6834, 7169, 7276, 9095, 9630, 10251, 10914, 11390, 12060, 13668, 14338, 16371, 17085, 18190, 19260, 20502, 21507, 21828, 22780, 27285, 28676, 32742, 34170, 35845, 36380, 41004, 43014, 51255, 54570, 64521, 65484, 68340, 71690, 81855, 86028, 102510, 107535, 109140, 121873, 129042, 143380, 163710, 205020, 215070, 243746, 258084, 322605, 327420, 365619, 430140, 487492, 609365, 645210, 731238, 1096857, 1218730, 1290420, 1462476, 1828095, 2193714, 2437460, 3656190, 4387428, 5484285, 7312380, 10968570, 21937140]

約数ペア:

[(1, 21937140), (2, 10968570), (3, 7312380), (4, 5484285), (5, 4387428), (6, 3656190), (9, 2437460), (10, 2193714), (12, 1828095), (15, 1462476), (17, 1290420), (18, 1218730), (20, 1096857), (30, 731238), (34, 645210), (36, 609365), (45, 487492), (51, 430140), (60, 365619), (67, 327420), (68, 322605), (85, 258084), (90, 243746), (102, 215070), (107, 205020), (134, 163710), (153, 143380), (170, 129042), (180, 121873), (201, 109140), (204, 107535), (214, 102510), (255, 86028), (268, 81855), (306, 71690), (321, 68340), (335, 65484), (340, 64521), (402, 54570), (428, 51255), (510, 43014), (535, 41004), (603, 36380), (612, 35845), (642, 34170), (670, 32742), (765, 28676), (804, 27285), (963, 22780), (1005, 21828), (1020, 21507), (1070, 20502), (1139, 19260), (1206, 18190), (1284, 17085), (1340, 16371), (1530, 14338), (1605, 13668), (1819, 12060), (1926, 11390), (2010, 10914), (2140, 10251), (2278, 9630), (2412, 9095), (3015, 7276), (3060, 7169), (3210, 6834), (3417, 6420), (3638, 6030), (3852, 5695), (4020, 5457), (4556, 4815)]