20065900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{179}}^1$

素因数の和:271

約数の個数: 72

約数和(自身を含む): 46872000

約数和(自身を除く): 26806100

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 59, 76, 95, 100, 118, 179, 190, 236, 295, 358, 380, 475, 590, 716, 895, 950, 1121, 1180, 1475, 1790, 1900, 2242, 2950, 3401, 3580, 4475, 4484, 5605, 5900, 6802, 8950, 10561, 11210, 13604, 17005, 17900, 21122, 22420, 28025, 34010, 42244, 52805, 56050, 68020, 85025, 105610, 112100, 170050, 200659, 211220, 264025, 340100, 401318, 528050, 802636, 1003295, 1056100, 2006590, 4013180, 5016475, 10032950, 20065900]

約数ペア:

[(1, 20065900), (2, 10032950), (4, 5016475), (5, 4013180), (10, 2006590), (19, 1056100), (20, 1003295), (25, 802636), (38, 528050), (50, 401318), (59, 340100), (76, 264025), (95, 211220), (100, 200659), (118, 170050), (179, 112100), (190, 105610), (236, 85025), (295, 68020), (358, 56050), (380, 52805), (475, 42244), (590, 34010), (716, 28025), (895, 22420), (950, 21122), (1121, 17900), (1180, 17005), (1475, 13604), (1790, 11210), (1900, 10561), (2242, 8950), (2950, 6802), (3401, 5900), (3580, 5605), (4475, 4484)]