21461450

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1$

素因数の和:120

約数の個数: 72

約数和(自身を含む): 44645580

約数和(自身を除く): 23184130

約数列:

[1, 2, 5, 10, 19, 25, 29, 38, 41, 50, 58, 82, 95, 145, 190, 205, 290, 361, 410, 475, 551, 722, 725, 779, 950, 1025, 1102, 1189, 1450, 1558, 1805, 2050, 2378, 2755, 3610, 3895, 5510, 5945, 7790, 9025, 10469, 11890, 13775, 14801, 18050, 19475, 20938, 22591, 27550, 29602, 29725, 38950, 45182, 52345, 59450, 74005, 104690, 112955, 148010, 225910, 261725, 370025, 429229, 523450, 564775, 740050, 858458, 1129550, 2146145, 4292290, 10730725, 21461450]

約数ペア:

[(1, 21461450), (2, 10730725), (5, 4292290), (10, 2146145), (19, 1129550), (25, 858458), (29, 740050), (38, 564775), (41, 523450), (50, 429229), (58, 370025), (82, 261725), (95, 225910), (145, 148010), (190, 112955), (205, 104690), (290, 74005), (361, 59450), (410, 52345), (475, 45182), (551, 38950), (722, 29725), (725, 29602), (779, 27550), (950, 22591), (1025, 20938), (1102, 19475), (1189, 18050), (1450, 14801), (1558, 13775), (1805, 11890), (2050, 10469), (2378, 9025), (2755, 7790), (3610, 5945), (3895, 5510)]