21815552

素因数分解:

$2^8\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:215

約数の個数: 72

約数和(自身を含む): 48663552

約数和(自身を除く): 26848000

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 61, 64, 88, 122, 127, 128, 176, 244, 254, 256, 352, 488, 508, 671, 704, 976, 1016, 1342, 1397, 1408, 1952, 2032, 2684, 2794, 2816, 3904, 4064, 5368, 5588, 7747, 7808, 8128, 10736, 11176, 15494, 15616, 16256, 21472, 22352, 30988, 32512, 42944, 44704, 61976, 85217, 85888, 89408, 123952, 170434, 171776, 178816, 247904, 340868, 357632, 495808, 681736, 991616, 1363472, 1983232, 2726944, 5453888, 10907776, 21815552]

約数ペア:

[(1, 21815552), (2, 10907776), (4, 5453888), (8, 2726944), (11, 1983232), (16, 1363472), (22, 991616), (32, 681736), (44, 495808), (61, 357632), (64, 340868), (88, 247904), (122, 178816), (127, 171776), (128, 170434), (176, 123952), (244, 89408), (254, 85888), (256, 85217), (352, 61976), (488, 44704), (508, 42944), (671, 32512), (704, 30988), (976, 22352), (1016, 21472), (1342, 16256), (1397, 15616), (1408, 15494), (1952, 11176), (2032, 10736), (2684, 8128), (2794, 7808), (2816, 7747), (3904, 5588), (4064, 5368)]