16978780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{491}}^1$

素因数の和:539

約数の個数: 96

約数和(自身を含む): 46287360

約数和(自身を除く): 29308580

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 19, 20, 26, 28, 35, 38, 52, 65, 70, 76, 91, 95, 130, 133, 140, 182, 190, 247, 260, 266, 364, 380, 455, 491, 494, 532, 665, 910, 982, 988, 1235, 1330, 1729, 1820, 1964, 2455, 2470, 2660, 3437, 3458, 4910, 4940, 6383, 6874, 6916, 8645, 9329, 9820, 12766, 13748, 17185, 17290, 18658, 25532, 31915, 34370, 34580, 37316, 44681, 46645, 63830, 65303, 68740, 89362, 93290, 121277, 127660, 130606, 178724, 186580, 223405, 242554, 261212, 326515, 446810, 485108, 606385, 653030, 848939, 893620, 1212770, 1306060, 1697878, 2425540, 3395756, 4244695, 8489390, 16978780]

約数ペア:

[(1, 16978780), (2, 8489390), (4, 4244695), (5, 3395756), (7, 2425540), (10, 1697878), (13, 1306060), (14, 1212770), (19, 893620), (20, 848939), (26, 653030), (28, 606385), (35, 485108), (38, 446810), (52, 326515), (65, 261212), (70, 242554), (76, 223405), (91, 186580), (95, 178724), (130, 130606), (133, 127660), (140, 121277), (182, 93290), (190, 89362), (247, 68740), (260, 65303), (266, 63830), (364, 46645), (380, 44681), (455, 37316), (491, 34580), (494, 34370), (532, 31915), (665, 25532), (910, 18658), (982, 17290), (988, 17185), (1235, 13748), (1330, 12766), (1729, 9820), (1820, 9329), (1964, 8645), (2455, 6916), (2470, 6874), (2660, 6383), (3437, 4940), (3458, 4910)]