20345220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{241}}^1$

素因数の和:330

約数の個数: 144

約数和(自身を含む): 71879808

約数和(自身を除く): 51534588

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 67, 70, 84, 90, 105, 126, 134, 140, 180, 201, 210, 241, 252, 268, 315, 335, 402, 420, 469, 482, 603, 630, 670, 723, 804, 938, 964, 1005, 1205, 1206, 1260, 1340, 1407, 1446, 1687, 1876, 2010, 2169, 2345, 2410, 2412, 2814, 2892, 3015, 3374, 3615, 4020, 4221, 4338, 4690, 4820, 5061, 5628, 6030, 6748, 7035, 7230, 8435, 8442, 8676, 9380, 10122, 10845, 12060, 14070, 14460, 15183, 16147, 16870, 16884, 20244, 21105, 21690, 25305, 28140, 30366, 32294, 33740, 42210, 43380, 48441, 50610, 60732, 64588, 75915, 80735, 84420, 96882, 101220, 113029, 145323, 151830, 161470, 193764, 226058, 242205, 290646, 303660, 322940, 339087, 452116, 484410, 565145, 581292, 678174, 726615, 968820, 1017261, 1130290, 1356348, 1453230, 1695435, 2034522, 2260580, 2906460, 3390870, 4069044, 5086305, 6781740, 10172610, 20345220]

約数ペア:

[(1, 20345220), (2, 10172610), (3, 6781740), (4, 5086305), (5, 4069044), (6, 3390870), (7, 2906460), (9, 2260580), (10, 2034522), (12, 1695435), (14, 1453230), (15, 1356348), (18, 1130290), (20, 1017261), (21, 968820), (28, 726615), (30, 678174), (35, 581292), (36, 565145), (42, 484410), (45, 452116), (60, 339087), (63, 322940), (67, 303660), (70, 290646), (84, 242205), (90, 226058), (105, 193764), (126, 161470), (134, 151830), (140, 145323), (180, 113029), (201, 101220), (210, 96882), (241, 84420), (252, 80735), (268, 75915), (315, 64588), (335, 60732), (402, 50610), (420, 48441), (469, 43380), (482, 42210), (603, 33740), (630, 32294), (670, 30366), (723, 28140), (804, 25305), (938, 21690), (964, 21105), (1005, 20244), (1205, 16884), (1206, 16870), (1260, 16147), (1340, 15183), (1407, 14460), (1446, 14070), (1687, 12060), (1876, 10845), (2010, 10122), (2169, 9380), (2345, 8676), (2410, 8442), (2412, 8435), (2814, 7230), (2892, 7035), (3015, 6748), (3374, 6030), (3615, 5628), (4020, 5061), (4221, 4820), (4338, 4690)]