21897960

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{199}}^1$

素因数の和:351

約数の個数: 128

約数和(自身を含む): 76032000

約数和(自身を除く): 54134040

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 131, 140, 168, 199, 210, 262, 280, 393, 398, 420, 524, 597, 655, 786, 796, 840, 917, 995, 1048, 1194, 1310, 1393, 1572, 1592, 1834, 1965, 1990, 2388, 2620, 2751, 2786, 2985, 3144, 3668, 3930, 3980, 4179, 4585, 4776, 5240, 5502, 5572, 5970, 6965, 7336, 7860, 7960, 8358, 9170, 11004, 11144, 11940, 13755, 13930, 15720, 16716, 18340, 20895, 22008, 23880, 26069, 27510, 27860, 33432, 36680, 41790, 52138, 55020, 55720, 78207, 83580, 104276, 110040, 130345, 156414, 167160, 182483, 208552, 260690, 312828, 364966, 391035, 521380, 547449, 625656, 729932, 782070, 912415, 1042760, 1094898, 1459864, 1564140, 1824830, 2189796, 2737245, 3128280, 3649660, 4379592, 5474490, 7299320, 10948980, 21897960]

約数ペア:

[(1, 21897960), (2, 10948980), (3, 7299320), (4, 5474490), (5, 4379592), (6, 3649660), (7, 3128280), (8, 2737245), (10, 2189796), (12, 1824830), (14, 1564140), (15, 1459864), (20, 1094898), (21, 1042760), (24, 912415), (28, 782070), (30, 729932), (35, 625656), (40, 547449), (42, 521380), (56, 391035), (60, 364966), (70, 312828), (84, 260690), (105, 208552), (120, 182483), (131, 167160), (140, 156414), (168, 130345), (199, 110040), (210, 104276), (262, 83580), (280, 78207), (393, 55720), (398, 55020), (420, 52138), (524, 41790), (597, 36680), (655, 33432), (786, 27860), (796, 27510), (840, 26069), (917, 23880), (995, 22008), (1048, 20895), (1194, 18340), (1310, 16716), (1393, 15720), (1572, 13930), (1592, 13755), (1834, 11940), (1965, 11144), (1990, 11004), (2388, 9170), (2620, 8358), (2751, 7960), (2786, 7860), (2985, 7336), (3144, 6965), (3668, 5970), (3930, 5572), (3980, 5502), (4179, 5240), (4585, 4776)]