20871900

素因数分解:

$2^2\times 3^2\times 5^2\times 7^1\times {\mathrm{3313}}^1$

素因数の和:3340

約数の個数: 108

約数和(自身を含む): 74790352

約数和(自身を除く): 53918452

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 25, 28, 30, 35, 36, 42, 45, 50, 60, 63, 70, 75, 84, 90, 100, 105, 126, 140, 150, 175, 180, 210, 225, 252, 300, 315, 350, 420, 450, 525, 630, 700, 900, 1050, 1260, 1575, 2100, 3150, 3313, 6300, 6626, 9939, 13252, 16565, 19878, 23191, 29817, 33130, 39756, 46382, 49695, 59634, 66260, 69573, 82825, 92764, 99390, 115955, 119268, 139146, 149085, 165650, 198780, 208719, 231910, 248475, 278292, 298170, 331300, 347865, 417438, 463820, 496950, 579775, 596340, 695730, 745425, 834876, 993900, 1043595, 1159550, 1391460, 1490850, 1739325, 2087190, 2319100, 2981700, 3478650, 4174380, 5217975, 6957300, 10435950, 20871900]

約数ペア:

[(1, 20871900), (2, 10435950), (3, 6957300), (4, 5217975), (5, 4174380), (6, 3478650), (7, 2981700), (9, 2319100), (10, 2087190), (12, 1739325), (14, 1490850), (15, 1391460), (18, 1159550), (20, 1043595), (21, 993900), (25, 834876), (28, 745425), (30, 695730), (35, 596340), (36, 579775), (42, 496950), (45, 463820), (50, 417438), (60, 347865), (63, 331300), (70, 298170), (75, 278292), (84, 248475), (90, 231910), (100, 208719), (105, 198780), (126, 165650), (140, 149085), (150, 139146), (175, 119268), (180, 115955), (210, 99390), (225, 92764), (252, 82825), (300, 69573), (315, 66260), (350, 59634), (420, 49695), (450, 46382), (525, 39756), (630, 33130), (700, 29817), (900, 23191), (1050, 19878), (1260, 16565), (1575, 13252), (2100, 9939), (3150, 6626), (3313, 6300)]