28737500

素因数分解:

$2^2\times 5^5\times {\mathrm{11}}^2\times {\mathrm{19}}^1$

素因数の和:70

約数の個数: 108

約数和(自身を含む): 72729720

約数和(自身を除く): 43992220

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 25, 38, 44, 50, 55, 76, 95, 100, 110, 121, 125, 190, 209, 220, 242, 250, 275, 380, 418, 475, 484, 500, 550, 605, 625, 836, 950, 1045, 1100, 1210, 1250, 1375, 1900, 2090, 2299, 2375, 2420, 2500, 2750, 3025, 3125, 4180, 4598, 4750, 5225, 5500, 6050, 6250, 6875, 9196, 9500, 10450, 11495, 11875, 12100, 12500, 13750, 15125, 20900, 22990, 23750, 26125, 27500, 30250, 34375, 45980, 47500, 52250, 57475, 59375, 60500, 68750, 75625, 104500, 114950, 118750, 130625, 137500, 151250, 229900, 237500, 261250, 287375, 302500, 378125, 522500, 574750, 653125, 756250, 1149500, 1306250, 1436875, 1512500, 2612500, 2873750, 5747500, 7184375, 14368750, 28737500]

約数ペア:

[(1, 28737500), (2, 14368750), (4, 7184375), (5, 5747500), (10, 2873750), (11, 2612500), (19, 1512500), (20, 1436875), (22, 1306250), (25, 1149500), (38, 756250), (44, 653125), (50, 574750), (55, 522500), (76, 378125), (95, 302500), (100, 287375), (110, 261250), (121, 237500), (125, 229900), (190, 151250), (209, 137500), (220, 130625), (242, 118750), (250, 114950), (275, 104500), (380, 75625), (418, 68750), (475, 60500), (484, 59375), (500, 57475), (550, 52250), (605, 47500), (625, 45980), (836, 34375), (950, 30250), (1045, 27500), (1100, 26125), (1210, 23750), (1250, 22990), (1375, 20900), (1900, 15125), (2090, 13750), (2299, 12500), (2375, 12100), (2420, 11875), (2500, 11495), (2750, 10450), (3025, 9500), (3125, 9196), (4180, 6875), (4598, 6250), (4750, 6050), (5225, 5500)]