19742528

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{389}}^1$

素因数の和:475

約数の個数: 56

約数和(自身を含む): 42992040

約数和(自身を除く): 23249512

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 61, 64, 104, 122, 208, 244, 389, 416, 488, 778, 793, 832, 976, 1556, 1586, 1952, 3112, 3172, 3904, 5057, 6224, 6344, 10114, 12448, 12688, 20228, 23729, 24896, 25376, 40456, 47458, 50752, 80912, 94916, 161824, 189832, 308477, 323648, 379664, 616954, 759328, 1233908, 1518656, 2467816, 4935632, 9871264, 19742528]

約数ペア:

[(1, 19742528), (2, 9871264), (4, 4935632), (8, 2467816), (13, 1518656), (16, 1233908), (26, 759328), (32, 616954), (52, 379664), (61, 323648), (64, 308477), (104, 189832), (122, 161824), (208, 94916), (244, 80912), (389, 50752), (416, 47458), (488, 40456), (778, 25376), (793, 24896), (832, 23729), (976, 20228), (1556, 12688), (1586, 12448), (1952, 10114), (3112, 6344), (3172, 6224), (3904, 5057)]