64987936

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{61}}^1\times {\mathrm{197}}^1$

素因数の和:294

約数の個数: 72

約数和(自身を含む): 141530004

約数和(自身を除く): 76542068

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 61, 104, 122, 169, 197, 208, 244, 338, 394, 416, 488, 676, 788, 793, 976, 1352, 1576, 1586, 1952, 2561, 2704, 3152, 3172, 5122, 5408, 6304, 6344, 10244, 10309, 12017, 12688, 20488, 20618, 24034, 25376, 33293, 40976, 41236, 48068, 66586, 81952, 82472, 96136, 133172, 156221, 164944, 192272, 266344, 312442, 329888, 384544, 532688, 624884, 1065376, 1249768, 2030873, 2499536, 4061746, 4999072, 8123492, 16246984, 32493968, 64987936]

約数ペア:

[(1, 64987936), (2, 32493968), (4, 16246984), (8, 8123492), (13, 4999072), (16, 4061746), (26, 2499536), (32, 2030873), (52, 1249768), (61, 1065376), (104, 624884), (122, 532688), (169, 384544), (197, 329888), (208, 312442), (244, 266344), (338, 192272), (394, 164944), (416, 156221), (488, 133172), (676, 96136), (788, 82472), (793, 81952), (976, 66586), (1352, 48068), (1576, 41236), (1586, 40976), (1952, 33293), (2561, 25376), (2704, 24034), (3152, 20618), (3172, 20488), (5122, 12688), (5408, 12017), (6304, 10309), (6344, 10244)]