21303712

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{947}}^1$

素因数の和:1013

約数の個数: 48

約数和(自身を含む): 45390240

約数和(自身を除く): 24086528

約数列:

[1, 2, 4, 8, 16, 19, 32, 37, 38, 74, 76, 148, 152, 296, 304, 592, 608, 703, 947, 1184, 1406, 1894, 2812, 3788, 5624, 7576, 11248, 15152, 17993, 22496, 30304, 35039, 35986, 70078, 71972, 140156, 143944, 280312, 287888, 560624, 575776, 665741, 1121248, 1331482, 2662964, 5325928, 10651856, 21303712]

約数ペア:

[(1, 21303712), (2, 10651856), (4, 5325928), (8, 2662964), (16, 1331482), (19, 1121248), (32, 665741), (37, 575776), (38, 560624), (74, 287888), (76, 280312), (148, 143944), (152, 140156), (296, 71972), (304, 70078), (592, 35986), (608, 35039), (703, 30304), (947, 22496), (1184, 17993), (1406, 15152), (1894, 11248), (2812, 7576), (3788, 5624)]