128730840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{21893}}^1$

素因数の和:21921

約数の個数: 96

約数和(自身を含む): 449264880

約数和(自身を除く): 320534040

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 84, 98, 105, 120, 140, 147, 168, 196, 210, 245, 280, 294, 392, 420, 490, 588, 735, 840, 980, 1176, 1470, 1960, 2940, 5880, 21893, 43786, 65679, 87572, 109465, 131358, 153251, 175144, 218930, 262716, 306502, 328395, 437860, 459753, 525432, 613004, 656790, 766255, 875720, 919506, 1072757, 1226008, 1313580, 1532510, 1839012, 2145514, 2298765, 2627160, 3065020, 3218271, 3678024, 4291028, 4597530, 5363785, 6130040, 6436542, 8582056, 9195060, 10727570, 12873084, 16091355, 18390120, 21455140, 25746168, 32182710, 42910280, 64365420, 128730840]

約数ペア:

[(1, 128730840), (2, 64365420), (3, 42910280), (4, 32182710), (5, 25746168), (6, 21455140), (7, 18390120), (8, 16091355), (10, 12873084), (12, 10727570), (14, 9195060), (15, 8582056), (20, 6436542), (21, 6130040), (24, 5363785), (28, 4597530), (30, 4291028), (35, 3678024), (40, 3218271), (42, 3065020), (49, 2627160), (56, 2298765), (60, 2145514), (70, 1839012), (84, 1532510), (98, 1313580), (105, 1226008), (120, 1072757), (140, 919506), (147, 875720), (168, 766255), (196, 656790), (210, 613004), (245, 525432), (280, 459753), (294, 437860), (392, 328395), (420, 306502), (490, 262716), (588, 218930), (735, 175144), (840, 153251), (980, 131358), (1176, 109465), (1470, 87572), (1960, 65679), (2940, 43786), (5880, 21893)]