19771500

素因数分解:

$2^2\times 3^1\times 5^3\times 7^2\times {\mathrm{269}}^1$

素因数の和:305

約数の個数: 144

約数和(自身を含む): 67223520

約数和(自身を除く): 47452020

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 49, 50, 60, 70, 75, 84, 98, 100, 105, 125, 140, 147, 150, 175, 196, 210, 245, 250, 269, 294, 300, 350, 375, 420, 490, 500, 525, 538, 588, 700, 735, 750, 807, 875, 980, 1050, 1076, 1225, 1345, 1470, 1500, 1614, 1750, 1883, 2100, 2450, 2625, 2690, 2940, 3228, 3500, 3675, 3766, 4035, 4900, 5250, 5380, 5649, 6125, 6725, 7350, 7532, 8070, 9415, 10500, 11298, 12250, 13181, 13450, 14700, 16140, 18375, 18830, 20175, 22596, 24500, 26362, 26900, 28245, 33625, 36750, 37660, 39543, 40350, 47075, 52724, 56490, 65905, 67250, 73500, 79086, 80700, 94150, 100875, 112980, 131810, 134500, 141225, 158172, 188300, 197715, 201750, 235375, 263620, 282450, 329525, 395430, 403500, 470750, 564900, 659050, 706125, 790860, 941500, 988575, 1318100, 1412250, 1647625, 1977150, 2824500, 3295250, 3954300, 4942875, 6590500, 9885750, 19771500]

約数ペア:

[(1, 19771500), (2, 9885750), (3, 6590500), (4, 4942875), (5, 3954300), (6, 3295250), (7, 2824500), (10, 1977150), (12, 1647625), (14, 1412250), (15, 1318100), (20, 988575), (21, 941500), (25, 790860), (28, 706125), (30, 659050), (35, 564900), (42, 470750), (49, 403500), (50, 395430), (60, 329525), (70, 282450), (75, 263620), (84, 235375), (98, 201750), (100, 197715), (105, 188300), (125, 158172), (140, 141225), (147, 134500), (150, 131810), (175, 112980), (196, 100875), (210, 94150), (245, 80700), (250, 79086), (269, 73500), (294, 67250), (300, 65905), (350, 56490), (375, 52724), (420, 47075), (490, 40350), (500, 39543), (525, 37660), (538, 36750), (588, 33625), (700, 28245), (735, 26900), (750, 26362), (807, 24500), (875, 22596), (980, 20175), (1050, 18830), (1076, 18375), (1225, 16140), (1345, 14700), (1470, 13450), (1500, 13181), (1614, 12250), (1750, 11298), (1883, 10500), (2100, 9415), (2450, 8070), (2625, 7532), (2690, 7350), (2940, 6725), (3228, 6125), (3500, 5649), (3675, 5380), (3766, 5250), (4035, 4900)]