19854100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{251}}^1$

素因数の和:385

約数の個数: 72

約数和(自身を含む): 49871808

約数和(自身を除く): 30017708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 113, 140, 175, 226, 251, 350, 452, 502, 565, 700, 791, 1004, 1130, 1255, 1582, 1757, 2260, 2510, 2825, 3164, 3514, 3955, 5020, 5650, 6275, 7028, 7910, 8785, 11300, 12550, 15820, 17570, 19775, 25100, 28363, 35140, 39550, 43925, 56726, 79100, 87850, 113452, 141815, 175700, 198541, 283630, 397082, 567260, 709075, 794164, 992705, 1418150, 1985410, 2836300, 3970820, 4963525, 9927050, 19854100]

約数ペア:

[(1, 19854100), (2, 9927050), (4, 4963525), (5, 3970820), (7, 2836300), (10, 1985410), (14, 1418150), (20, 992705), (25, 794164), (28, 709075), (35, 567260), (50, 397082), (70, 283630), (100, 198541), (113, 175700), (140, 141815), (175, 113452), (226, 87850), (251, 79100), (350, 56726), (452, 43925), (502, 39550), (565, 35140), (700, 28363), (791, 25100), (1004, 19775), (1130, 17570), (1255, 15820), (1582, 12550), (1757, 11300), (2260, 8785), (2510, 7910), (2825, 7028), (3164, 6275), (3514, 5650), (3955, 5020)]