21312148

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:137

約数の個数: 96

約数和(自身を含む): 48263040

約数和(自身を除く): 26950892

約数列:

[1, 2, 4, 11, 13, 19, 22, 26, 37, 38, 44, 52, 53, 74, 76, 106, 143, 148, 209, 212, 247, 286, 407, 418, 481, 494, 572, 583, 689, 703, 814, 836, 962, 988, 1007, 1166, 1378, 1406, 1628, 1924, 1961, 2014, 2332, 2717, 2756, 2812, 3922, 4028, 5291, 5434, 7579, 7733, 7844, 9139, 10582, 10868, 11077, 13091, 15158, 15466, 18278, 21164, 21571, 22154, 25493, 26182, 30316, 30932, 36556, 37259, 43142, 44308, 50986, 52364, 74518, 86284, 100529, 101972, 144001, 149036, 201058, 280423, 288002, 402116, 409849, 484367, 560846, 576004, 819698, 968734, 1121692, 1639396, 1937468, 5328037, 10656074, 21312148]

約数ペア:

[(1, 21312148), (2, 10656074), (4, 5328037), (11, 1937468), (13, 1639396), (19, 1121692), (22, 968734), (26, 819698), (37, 576004), (38, 560846), (44, 484367), (52, 409849), (53, 402116), (74, 288002), (76, 280423), (106, 201058), (143, 149036), (148, 144001), (209, 101972), (212, 100529), (247, 86284), (286, 74518), (407, 52364), (418, 50986), (481, 44308), (494, 43142), (572, 37259), (583, 36556), (689, 30932), (703, 30316), (814, 26182), (836, 25493), (962, 22154), (988, 21571), (1007, 21164), (1166, 18278), (1378, 15466), (1406, 15158), (1628, 13091), (1924, 11077), (1961, 10868), (2014, 10582), (2332, 9139), (2717, 7844), (2756, 7733), (2812, 7579), (3922, 5434), (4028, 5291)]