21551220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{1787}}^1$

素因数の和:1869

約数の個数: 72

約数和(自身を含む): 66384864

約数和(自身を除く): 44833644

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 67, 90, 134, 180, 201, 268, 335, 402, 603, 670, 804, 1005, 1206, 1340, 1787, 2010, 2412, 3015, 3574, 4020, 5361, 6030, 7148, 8935, 10722, 12060, 16083, 17870, 21444, 26805, 32166, 35740, 53610, 64332, 80415, 107220, 119729, 160830, 239458, 321660, 359187, 478916, 598645, 718374, 1077561, 1197290, 1436748, 1795935, 2155122, 2394580, 3591870, 4310244, 5387805, 7183740, 10775610, 21551220]

約数ペア:

[(1, 21551220), (2, 10775610), (3, 7183740), (4, 5387805), (5, 4310244), (6, 3591870), (9, 2394580), (10, 2155122), (12, 1795935), (15, 1436748), (18, 1197290), (20, 1077561), (30, 718374), (36, 598645), (45, 478916), (60, 359187), (67, 321660), (90, 239458), (134, 160830), (180, 119729), (201, 107220), (268, 80415), (335, 64332), (402, 53610), (603, 35740), (670, 32166), (804, 26805), (1005, 21444), (1206, 17870), (1340, 16083), (1787, 12060), (2010, 10722), (2412, 8935), (3015, 7148), (3574, 6030), (4020, 5361)]