78867880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{461}}^1$

素因数の和:539

約数の個数: 128

約数和(自身を含む): 223534080

約数和(自身を除く): 144666200

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 47, 52, 56, 65, 70, 91, 94, 104, 130, 140, 182, 188, 235, 260, 280, 329, 364, 376, 455, 461, 470, 520, 611, 658, 728, 910, 922, 940, 1222, 1316, 1645, 1820, 1844, 1880, 2305, 2444, 2632, 3055, 3227, 3290, 3640, 3688, 4277, 4610, 4888, 5993, 6110, 6454, 6580, 8554, 9220, 11986, 12220, 12908, 13160, 16135, 17108, 18440, 21385, 21667, 23972, 24440, 25816, 29965, 32270, 34216, 41951, 42770, 43334, 47944, 59930, 64540, 83902, 85540, 86668, 108335, 119860, 129080, 151669, 167804, 171080, 173336, 209755, 216670, 239720, 281671, 303338, 335608, 419510, 433340, 563342, 606676, 758345, 839020, 866680, 1126684, 1213352, 1408355, 1516690, 1678040, 1971697, 2253368, 2816710, 3033380, 3943394, 5633420, 6066760, 7886788, 9858485, 11266840, 15773576, 19716970, 39433940, 78867880]

約数ペア:

[(1, 78867880), (2, 39433940), (4, 19716970), (5, 15773576), (7, 11266840), (8, 9858485), (10, 7886788), (13, 6066760), (14, 5633420), (20, 3943394), (26, 3033380), (28, 2816710), (35, 2253368), (40, 1971697), (47, 1678040), (52, 1516690), (56, 1408355), (65, 1213352), (70, 1126684), (91, 866680), (94, 839020), (104, 758345), (130, 606676), (140, 563342), (182, 433340), (188, 419510), (235, 335608), (260, 303338), (280, 281671), (329, 239720), (364, 216670), (376, 209755), (455, 173336), (461, 171080), (470, 167804), (520, 151669), (611, 129080), (658, 119860), (728, 108335), (910, 86668), (922, 85540), (940, 83902), (1222, 64540), (1316, 59930), (1645, 47944), (1820, 43334), (1844, 42770), (1880, 41951), (2305, 34216), (2444, 32270), (2632, 29965), (3055, 25816), (3227, 24440), (3290, 23972), (3640, 21667), (3688, 21385), (4277, 18440), (4610, 17108), (4888, 16135), (5993, 13160), (6110, 12908), (6454, 12220), (6580, 11986), (8554, 9220)]