172115720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:379

約数の個数: 128

約数和(自身を含む): 464486400

約数和(自身を除く): 292370680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 79, 124, 140, 155, 158, 217, 248, 251, 280, 310, 316, 395, 434, 502, 553, 620, 632, 790, 868, 1004, 1085, 1106, 1240, 1255, 1580, 1736, 1757, 2008, 2170, 2212, 2449, 2510, 2765, 3160, 3514, 4340, 4424, 4898, 5020, 5530, 7028, 7781, 8680, 8785, 9796, 10040, 11060, 12245, 14056, 15562, 17143, 17570, 19592, 19829, 22120, 24490, 31124, 34286, 35140, 38905, 39658, 48980, 54467, 62248, 68572, 70280, 77810, 79316, 85715, 97960, 99145, 108934, 137144, 138803, 155620, 158632, 171430, 198290, 217868, 272335, 277606, 311240, 342860, 396580, 435736, 544670, 555212, 614699, 685720, 694015, 793160, 1089340, 1110424, 1229398, 1388030, 2178680, 2458796, 2776060, 3073495, 4302893, 4917592, 5552120, 6146990, 8605786, 12293980, 17211572, 21514465, 24587960, 34423144, 43028930, 86057860, 172115720]

約数ペア:

[(1, 172115720), (2, 86057860), (4, 43028930), (5, 34423144), (7, 24587960), (8, 21514465), (10, 17211572), (14, 12293980), (20, 8605786), (28, 6146990), (31, 5552120), (35, 4917592), (40, 4302893), (56, 3073495), (62, 2776060), (70, 2458796), (79, 2178680), (124, 1388030), (140, 1229398), (155, 1110424), (158, 1089340), (217, 793160), (248, 694015), (251, 685720), (280, 614699), (310, 555212), (316, 544670), (395, 435736), (434, 396580), (502, 342860), (553, 311240), (620, 277606), (632, 272335), (790, 217868), (868, 198290), (1004, 171430), (1085, 158632), (1106, 155620), (1240, 138803), (1255, 137144), (1580, 108934), (1736, 99145), (1757, 97960), (2008, 85715), (2170, 79316), (2212, 77810), (2449, 70280), (2510, 68572), (2765, 62248), (3160, 54467), (3514, 48980), (4340, 39658), (4424, 38905), (4898, 35140), (5020, 34286), (5530, 31124), (7028, 24490), (7781, 22120), (8680, 19829), (8785, 19592), (9796, 17570), (10040, 17143), (11060, 15562), (12245, 14056)]