21242130

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1$

素因数の和:312

約数の個数: 128

約数和(自身を含む): 65028096

約数和(自身を除く): 43785966

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 26, 30, 31, 35, 39, 42, 62, 65, 70, 78, 91, 93, 105, 130, 155, 182, 186, 195, 210, 217, 251, 273, 310, 390, 403, 434, 455, 465, 502, 546, 651, 753, 806, 910, 930, 1085, 1209, 1255, 1302, 1365, 1506, 1757, 2015, 2170, 2418, 2510, 2730, 2821, 3255, 3263, 3514, 3765, 4030, 5271, 5642, 6045, 6510, 6526, 7530, 7781, 8463, 8785, 9789, 10542, 12090, 14105, 15562, 16315, 16926, 17570, 19578, 22841, 23343, 26355, 28210, 32630, 38905, 42315, 45682, 46686, 48945, 52710, 54467, 68523, 77810, 84630, 97890, 101153, 108934, 114205, 116715, 137046, 163401, 202306, 228410, 233430, 272335, 303459, 326802, 342615, 505765, 544670, 606918, 685230, 708071, 817005, 1011530, 1416142, 1517295, 1634010, 2124213, 3034590, 3540355, 4248426, 7080710, 10621065, 21242130]

約数ペア:

[(1, 21242130), (2, 10621065), (3, 7080710), (5, 4248426), (6, 3540355), (7, 3034590), (10, 2124213), (13, 1634010), (14, 1517295), (15, 1416142), (21, 1011530), (26, 817005), (30, 708071), (31, 685230), (35, 606918), (39, 544670), (42, 505765), (62, 342615), (65, 326802), (70, 303459), (78, 272335), (91, 233430), (93, 228410), (105, 202306), (130, 163401), (155, 137046), (182, 116715), (186, 114205), (195, 108934), (210, 101153), (217, 97890), (251, 84630), (273, 77810), (310, 68523), (390, 54467), (403, 52710), (434, 48945), (455, 46686), (465, 45682), (502, 42315), (546, 38905), (651, 32630), (753, 28210), (806, 26355), (910, 23343), (930, 22841), (1085, 19578), (1209, 17570), (1255, 16926), (1302, 16315), (1365, 15562), (1506, 14105), (1757, 12090), (2015, 10542), (2170, 9789), (2418, 8785), (2510, 8463), (2730, 7781), (2821, 7530), (3255, 6526), (3263, 6510), (3514, 6045), (3765, 5642), (4030, 5271)]