20894100

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{257}}^1\times {\mathrm{271}}^1$

素因数の和:545

約数の個数: 72

約数和(自身を含む): 60912768

約数和(自身を除く): 40018668

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 150, 257, 271, 300, 514, 542, 771, 813, 1028, 1084, 1285, 1355, 1542, 1626, 2570, 2710, 3084, 3252, 3855, 4065, 5140, 5420, 6425, 6775, 7710, 8130, 12850, 13550, 15420, 16260, 19275, 20325, 25700, 27100, 38550, 40650, 69647, 77100, 81300, 139294, 208941, 278588, 348235, 417882, 696470, 835764, 1044705, 1392940, 1741175, 2089410, 3482350, 4178820, 5223525, 6964700, 10447050, 20894100]

約数ペア:

[(1, 20894100), (2, 10447050), (3, 6964700), (4, 5223525), (5, 4178820), (6, 3482350), (10, 2089410), (12, 1741175), (15, 1392940), (20, 1044705), (25, 835764), (30, 696470), (50, 417882), (60, 348235), (75, 278588), (100, 208941), (150, 139294), (257, 81300), (271, 77100), (300, 69647), (514, 40650), (542, 38550), (771, 27100), (813, 25700), (1028, 20325), (1084, 19275), (1285, 16260), (1355, 15420), (1542, 13550), (1626, 12850), (2570, 8130), (2710, 7710), (3084, 6775), (3252, 6425), (3855, 5420), (4065, 5140)]