21154600

素因数分解:

$2^3\times 5^2\times {\mathrm{19}}^2\times {\mathrm{293}}^1$

素因数の和:347

約数の個数: 72

約数和(自身を含む): 52086510

約数和(自身を除く): 30931910

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 152, 190, 200, 293, 361, 380, 475, 586, 722, 760, 950, 1172, 1444, 1465, 1805, 1900, 2344, 2888, 2930, 3610, 3800, 5567, 5860, 7220, 7325, 9025, 11134, 11720, 14440, 14650, 18050, 22268, 27835, 29300, 36100, 44536, 55670, 58600, 72200, 105773, 111340, 139175, 211546, 222680, 278350, 423092, 528865, 556700, 846184, 1057730, 1113400, 2115460, 2644325, 4230920, 5288650, 10577300, 21154600]

約数ペア:

[(1, 21154600), (2, 10577300), (4, 5288650), (5, 4230920), (8, 2644325), (10, 2115460), (19, 1113400), (20, 1057730), (25, 846184), (38, 556700), (40, 528865), (50, 423092), (76, 278350), (95, 222680), (100, 211546), (152, 139175), (190, 111340), (200, 105773), (293, 72200), (361, 58600), (380, 55670), (475, 44536), (586, 36100), (722, 29300), (760, 27835), (950, 22268), (1172, 18050), (1444, 14650), (1465, 14440), (1805, 11720), (1900, 11134), (2344, 9025), (2888, 7325), (2930, 7220), (3610, 5860), (3800, 5567)]