31680324

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{487}}^1$

素因数の和:649

約数の個数: 72

約数和(自身を含む): 87039680

約数和(自身を除く): 55359356

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 139, 156, 234, 278, 417, 468, 487, 556, 834, 974, 1251, 1461, 1668, 1807, 1948, 2502, 2922, 3614, 4383, 5004, 5421, 5844, 6331, 7228, 8766, 10842, 12662, 16263, 17532, 18993, 21684, 25324, 32526, 37986, 56979, 65052, 67693, 75972, 113958, 135386, 203079, 227916, 270772, 406158, 609237, 812316, 880009, 1218474, 1760018, 2436948, 2640027, 3520036, 5280054, 7920081, 10560108, 15840162, 31680324]

約数ペア:

[(1, 31680324), (2, 15840162), (3, 10560108), (4, 7920081), (6, 5280054), (9, 3520036), (12, 2640027), (13, 2436948), (18, 1760018), (26, 1218474), (36, 880009), (39, 812316), (52, 609237), (78, 406158), (117, 270772), (139, 227916), (156, 203079), (234, 135386), (278, 113958), (417, 75972), (468, 67693), (487, 65052), (556, 56979), (834, 37986), (974, 32526), (1251, 25324), (1461, 21684), (1668, 18993), (1807, 17532), (1948, 16263), (2502, 12662), (2922, 10842), (3614, 8766), (4383, 7228), (5004, 6331), (5421, 5844)]