81825900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{20981}}^1$

素因数の和:21011

約数の個数: 72

約数和(自身を含む): 254973264

約数和(自身を除く): 173147364

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 20981, 41962, 62943, 83924, 104905, 125886, 209810, 251772, 272753, 314715, 419620, 524525, 545506, 629430, 818259, 1049050, 1091012, 1258860, 1363765, 1573575, 1636518, 2098100, 2727530, 3147150, 3273036, 4091295, 5455060, 6294300, 6818825, 8182590, 13637650, 16365180, 20456475, 27275300, 40912950, 81825900]

約数ペア:

[(1, 81825900), (2, 40912950), (3, 27275300), (4, 20456475), (5, 16365180), (6, 13637650), (10, 8182590), (12, 6818825), (13, 6294300), (15, 5455060), (20, 4091295), (25, 3273036), (26, 3147150), (30, 2727530), (39, 2098100), (50, 1636518), (52, 1573575), (60, 1363765), (65, 1258860), (75, 1091012), (78, 1049050), (100, 818259), (130, 629430), (150, 545506), (156, 524525), (195, 419620), (260, 314715), (300, 272753), (325, 251772), (390, 209810), (650, 125886), (780, 104905), (975, 83924), (1300, 62943), (1950, 41962), (3900, 20981)]