21861200

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:133

約数の個数: 120

約数和(自身を含む): 56829696

約数和(自身を除く): 34968496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 41, 43, 50, 62, 80, 82, 86, 100, 124, 155, 164, 172, 200, 205, 215, 248, 310, 328, 344, 400, 410, 430, 496, 620, 656, 688, 775, 820, 860, 1025, 1075, 1240, 1271, 1333, 1550, 1640, 1720, 1763, 2050, 2150, 2480, 2542, 2666, 3100, 3280, 3440, 3526, 4100, 4300, 5084, 5332, 6200, 6355, 6665, 7052, 8200, 8600, 8815, 10168, 10664, 12400, 12710, 13330, 14104, 16400, 17200, 17630, 20336, 21328, 25420, 26660, 28208, 31775, 33325, 35260, 44075, 50840, 53320, 54653, 63550, 66650, 70520, 88150, 101680, 106640, 109306, 127100, 133300, 141040, 176300, 218612, 254200, 266600, 273265, 352600, 437224, 508400, 533200, 546530, 705200, 874448, 1093060, 1366325, 2186120, 2732650, 4372240, 5465300, 10930600, 21861200]

約数ペア:

[(1, 21861200), (2, 10930600), (4, 5465300), (5, 4372240), (8, 2732650), (10, 2186120), (16, 1366325), (20, 1093060), (25, 874448), (31, 705200), (40, 546530), (41, 533200), (43, 508400), (50, 437224), (62, 352600), (80, 273265), (82, 266600), (86, 254200), (100, 218612), (124, 176300), (155, 141040), (164, 133300), (172, 127100), (200, 109306), (205, 106640), (215, 101680), (248, 88150), (310, 70520), (328, 66650), (344, 63550), (400, 54653), (410, 53320), (430, 50840), (496, 44075), (620, 35260), (656, 33325), (688, 31775), (775, 28208), (820, 26660), (860, 25420), (1025, 21328), (1075, 20336), (1240, 17630), (1271, 17200), (1333, 16400), (1550, 14104), (1640, 13330), (1720, 12710), (1763, 12400), (2050, 10664), (2150, 10168), (2480, 8815), (2542, 8600), (2666, 8200), (3100, 7052), (3280, 6665), (3440, 6355), (3526, 6200), (4100, 5332), (4300, 5084)]