648163796

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{19973}}^1$

素因数の和:20064

約数の個数: 48

約数和(自身を含む): 1386994560

約数和(自身を除く): 738830764

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 61, 76, 122, 133, 244, 266, 427, 532, 854, 1159, 1708, 2318, 4636, 8113, 16226, 19973, 32452, 39946, 79892, 139811, 279622, 379487, 559244, 758974, 1218353, 1517948, 2436706, 2656409, 4873412, 5312818, 8528471, 10625636, 17056942, 23148707, 34113884, 46297414, 92594828, 162040949, 324081898, 648163796]

約数ペア:

[(1, 648163796), (2, 324081898), (4, 162040949), (7, 92594828), (14, 46297414), (19, 34113884), (28, 23148707), (38, 17056942), (61, 10625636), (76, 8528471), (122, 5312818), (133, 4873412), (244, 2656409), (266, 2436706), (427, 1517948), (532, 1218353), (854, 758974), (1159, 559244), (1708, 379487), (2318, 279622), (4636, 139811), (8113, 79892), (16226, 39946), (19973, 32452)]