678189460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^2\times {\mathrm{701}}^1$

素因数の和:845

約数の個数: 72

約数和(自身を含む): 1561531608

約数和(自身を除く): 883342148

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 701, 793, 1220, 1402, 1586, 2804, 3172, 3505, 3721, 3965, 7010, 7442, 7930, 9113, 14020, 14884, 15860, 18226, 18605, 36452, 37210, 42761, 45565, 48373, 74420, 85522, 91130, 96746, 171044, 182260, 193492, 213805, 241865, 427610, 483730, 555893, 855220, 967460, 1111786, 2223572, 2608421, 2779465, 5216842, 5558930, 10433684, 11117860, 13042105, 26084210, 33909473, 52168420, 67818946, 135637892, 169547365, 339094730, 678189460]

約数ペア:

[(1, 678189460), (2, 339094730), (4, 169547365), (5, 135637892), (10, 67818946), (13, 52168420), (20, 33909473), (26, 26084210), (52, 13042105), (61, 11117860), (65, 10433684), (122, 5558930), (130, 5216842), (244, 2779465), (260, 2608421), (305, 2223572), (610, 1111786), (701, 967460), (793, 855220), (1220, 555893), (1402, 483730), (1586, 427610), (2804, 241865), (3172, 213805), (3505, 193492), (3721, 182260), (3965, 171044), (7010, 96746), (7442, 91130), (7930, 85522), (9113, 74420), (14020, 48373), (14884, 45565), (15860, 42761), (18226, 37210), (18605, 36452)]