20964448

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{29}}^2\times {\mathrm{41}}^1$

素因数の和:128

約数の個数: 72

約数和(自身を含む): 46093320

約数和(自身を除く): 25128872

約数列:

[1, 2, 4, 8, 16, 19, 29, 32, 38, 41, 58, 76, 82, 116, 152, 164, 232, 304, 328, 464, 551, 608, 656, 779, 841, 928, 1102, 1189, 1312, 1558, 1682, 2204, 2378, 3116, 3364, 4408, 4756, 6232, 6728, 8816, 9512, 12464, 13456, 15979, 17632, 19024, 22591, 24928, 26912, 31958, 34481, 38048, 45182, 63916, 68962, 90364, 127832, 137924, 180728, 255664, 275848, 361456, 511328, 551696, 655139, 722912, 1103392, 1310278, 2620556, 5241112, 10482224, 20964448]

約数ペア:

[(1, 20964448), (2, 10482224), (4, 5241112), (8, 2620556), (16, 1310278), (19, 1103392), (29, 722912), (32, 655139), (38, 551696), (41, 511328), (58, 361456), (76, 275848), (82, 255664), (116, 180728), (152, 137924), (164, 127832), (232, 90364), (304, 68962), (328, 63916), (464, 45182), (551, 38048), (608, 34481), (656, 31958), (779, 26912), (841, 24928), (928, 22591), (1102, 19024), (1189, 17632), (1312, 15979), (1558, 13456), (1682, 12464), (2204, 9512), (2378, 8816), (3116, 6728), (3364, 6232), (4408, 4756)]