19691776

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:187

約数の個数: 72

約数和(自身を含む): 43467704

約数和(自身を除く): 23775928

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 61, 64, 97, 104, 122, 128, 194, 208, 244, 256, 388, 416, 488, 776, 793, 832, 976, 1261, 1552, 1586, 1664, 1952, 2522, 3104, 3172, 3328, 3904, 5044, 5917, 6208, 6344, 7808, 10088, 11834, 12416, 12688, 15616, 20176, 23668, 24832, 25376, 40352, 47336, 50752, 76921, 80704, 94672, 101504, 153842, 161408, 189344, 203008, 307684, 322816, 378688, 615368, 757376, 1230736, 1514752, 2461472, 4922944, 9845888, 19691776]

約数ペア:

[(1, 19691776), (2, 9845888), (4, 4922944), (8, 2461472), (13, 1514752), (16, 1230736), (26, 757376), (32, 615368), (52, 378688), (61, 322816), (64, 307684), (97, 203008), (104, 189344), (122, 161408), (128, 153842), (194, 101504), (208, 94672), (244, 80704), (256, 76921), (388, 50752), (416, 47336), (488, 40352), (776, 25376), (793, 24832), (832, 23668), (976, 20176), (1261, 15616), (1552, 12688), (1586, 12416), (1664, 11834), (1952, 10088), (2522, 7808), (3104, 6344), (3172, 6208), (3328, 5917), (3904, 5044)]