77967760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1229}}^1$

素因数の和:1316

約数の個数: 80

約数和(自身を含む): 198581040

約数和(自身を除く): 120613280

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 61, 65, 80, 104, 122, 130, 208, 244, 260, 305, 488, 520, 610, 793, 976, 1040, 1220, 1229, 1586, 2440, 2458, 3172, 3965, 4880, 4916, 6145, 6344, 7930, 9832, 12290, 12688, 15860, 15977, 19664, 24580, 31720, 31954, 49160, 63440, 63908, 74969, 79885, 98320, 127816, 149938, 159770, 255632, 299876, 319540, 374845, 599752, 639080, 749690, 974597, 1199504, 1278160, 1499380, 1949194, 2998760, 3898388, 4872985, 5997520, 7796776, 9745970, 15593552, 19491940, 38983880, 77967760]

約数ペア:

[(1, 77967760), (2, 38983880), (4, 19491940), (5, 15593552), (8, 9745970), (10, 7796776), (13, 5997520), (16, 4872985), (20, 3898388), (26, 2998760), (40, 1949194), (52, 1499380), (61, 1278160), (65, 1199504), (80, 974597), (104, 749690), (122, 639080), (130, 599752), (208, 374845), (244, 319540), (260, 299876), (305, 255632), (488, 159770), (520, 149938), (610, 127816), (793, 98320), (976, 79885), (1040, 74969), (1220, 63908), (1229, 63440), (1586, 49160), (2440, 31954), (2458, 31720), (3172, 24580), (3965, 19664), (4880, 15977), (4916, 15860), (6145, 12688), (6344, 12290), (7930, 9832)]