51688140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{17581}}^1$

素因数の和:17607

約数の個数: 72

約数和(自身を含む): 168365232

約数和(自身を除く): 116677092

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 17581, 35162, 52743, 70324, 87905, 105486, 123067, 175810, 210972, 246134, 263715, 351620, 369201, 492268, 527430, 615335, 738402, 861469, 1054860, 1230670, 1476804, 1722938, 1846005, 2461340, 2584407, 3445876, 3692010, 4307345, 5168814, 7384020, 8614690, 10337628, 12922035, 17229380, 25844070, 51688140]

約数ペア:

[(1, 51688140), (2, 25844070), (3, 17229380), (4, 12922035), (5, 10337628), (6, 8614690), (7, 7384020), (10, 5168814), (12, 4307345), (14, 3692010), (15, 3445876), (20, 2584407), (21, 2461340), (28, 1846005), (30, 1722938), (35, 1476804), (42, 1230670), (49, 1054860), (60, 861469), (70, 738402), (84, 615335), (98, 527430), (105, 492268), (140, 369201), (147, 351620), (196, 263715), (210, 246134), (245, 210972), (294, 175810), (420, 123067), (490, 105486), (588, 87905), (735, 70324), (980, 52743), (1470, 35162), (2940, 17581)]