81996100

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{347}}^1$

素因数の和:517

約数の個数: 72

約数和(自身を含む): 190300320

約数和(自身を除く): 108304220

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 85, 100, 139, 170, 278, 340, 347, 425, 556, 694, 695, 850, 1388, 1390, 1700, 1735, 2363, 2780, 3470, 3475, 4726, 5899, 6940, 6950, 8675, 9452, 11798, 11815, 13900, 17350, 23596, 23630, 29495, 34700, 47260, 48233, 58990, 59075, 96466, 117980, 118150, 147475, 192932, 236300, 241165, 294950, 482330, 589900, 819961, 964660, 1205825, 1639922, 2411650, 3279844, 4099805, 4823300, 8199610, 16399220, 20499025, 40998050, 81996100]

約数ペア:

[(1, 81996100), (2, 40998050), (4, 20499025), (5, 16399220), (10, 8199610), (17, 4823300), (20, 4099805), (25, 3279844), (34, 2411650), (50, 1639922), (68, 1205825), (85, 964660), (100, 819961), (139, 589900), (170, 482330), (278, 294950), (340, 241165), (347, 236300), (425, 192932), (556, 147475), (694, 118150), (695, 117980), (850, 96466), (1388, 59075), (1390, 58990), (1700, 48233), (1735, 47260), (2363, 34700), (2780, 29495), (3470, 23630), (3475, 23596), (4726, 17350), (5899, 13900), (6940, 11815), (6950, 11798), (8675, 9452)]