21805140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{269}}^1$

素因数の和:481

約数の個数: 96

約数和(自身を含む): 70398720

約数和(自身を除く): 48593580

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 193, 210, 269, 386, 420, 538, 579, 772, 807, 965, 1076, 1158, 1345, 1351, 1614, 1883, 1930, 2316, 2690, 2702, 2895, 3228, 3766, 3860, 4035, 4053, 5380, 5404, 5649, 5790, 6755, 7532, 8070, 8106, 9415, 11298, 11580, 13510, 16140, 16212, 18830, 20265, 22596, 27020, 28245, 37660, 40530, 51917, 56490, 81060, 103834, 112980, 155751, 207668, 259585, 311502, 363419, 519170, 623004, 726838, 778755, 1038340, 1090257, 1453676, 1557510, 1817095, 2180514, 3115020, 3634190, 4361028, 5451285, 7268380, 10902570, 21805140]

約数ペア:

[(1, 21805140), (2, 10902570), (3, 7268380), (4, 5451285), (5, 4361028), (6, 3634190), (7, 3115020), (10, 2180514), (12, 1817095), (14, 1557510), (15, 1453676), (20, 1090257), (21, 1038340), (28, 778755), (30, 726838), (35, 623004), (42, 519170), (60, 363419), (70, 311502), (84, 259585), (105, 207668), (140, 155751), (193, 112980), (210, 103834), (269, 81060), (386, 56490), (420, 51917), (538, 40530), (579, 37660), (772, 28245), (807, 27020), (965, 22596), (1076, 20265), (1158, 18830), (1345, 16212), (1351, 16140), (1614, 13510), (1883, 11580), (1930, 11298), (2316, 9415), (2690, 8106), (2702, 8070), (2895, 7532), (3228, 6755), (3766, 5790), (3860, 5649), (4035, 5404), (4053, 5380)]