20473180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1607}}^1$

素因数の和:1643

約数の個数: 72

約数和(自身を含む): 53893728

約数和(自身を除く): 33420548

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1607, 1820, 2548, 3185, 3214, 6370, 6428, 8035, 11249, 12740, 16070, 20891, 22498, 32140, 41782, 44996, 56245, 78743, 83564, 104455, 112490, 146237, 157486, 208910, 224980, 292474, 314972, 393715, 417820, 584948, 731185, 787430, 1023659, 1462370, 1574860, 2047318, 2924740, 4094636, 5118295, 10236590, 20473180]

約数ペア:

[(1, 20473180), (2, 10236590), (4, 5118295), (5, 4094636), (7, 2924740), (10, 2047318), (13, 1574860), (14, 1462370), (20, 1023659), (26, 787430), (28, 731185), (35, 584948), (49, 417820), (52, 393715), (65, 314972), (70, 292474), (91, 224980), (98, 208910), (130, 157486), (140, 146237), (182, 112490), (196, 104455), (245, 83564), (260, 78743), (364, 56245), (455, 44996), (490, 41782), (637, 32140), (910, 22498), (980, 20891), (1274, 16070), (1607, 12740), (1820, 11249), (2548, 8035), (3185, 6428), (3214, 6370)]