21716820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1$

素因数の和:230

約数の個数: 144

約数和(自身を含む): 71705088

約数和(自身を除く): 49988268

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 47, 51, 60, 68, 85, 90, 94, 102, 141, 151, 153, 170, 180, 188, 204, 235, 255, 282, 302, 306, 340, 423, 453, 470, 510, 564, 604, 612, 705, 755, 765, 799, 846, 906, 940, 1020, 1359, 1410, 1510, 1530, 1598, 1692, 1812, 2115, 2265, 2397, 2567, 2718, 2820, 3020, 3060, 3196, 3995, 4230, 4530, 4794, 5134, 5436, 6795, 7097, 7191, 7701, 7990, 8460, 9060, 9588, 10268, 11985, 12835, 13590, 14194, 14382, 15402, 15980, 21291, 23103, 23970, 25670, 27180, 28388, 28764, 30804, 35485, 35955, 38505, 42582, 46206, 47940, 51340, 63873, 70970, 71910, 77010, 85164, 92412, 106455, 115515, 120649, 127746, 141940, 143820, 154020, 212910, 231030, 241298, 255492, 319365, 361947, 425820, 462060, 482596, 603245, 638730, 723894, 1085841, 1206490, 1277460, 1447788, 1809735, 2171682, 2412980, 3619470, 4343364, 5429205, 7238940, 10858410, 21716820]

約数ペア:

[(1, 21716820), (2, 10858410), (3, 7238940), (4, 5429205), (5, 4343364), (6, 3619470), (9, 2412980), (10, 2171682), (12, 1809735), (15, 1447788), (17, 1277460), (18, 1206490), (20, 1085841), (30, 723894), (34, 638730), (36, 603245), (45, 482596), (47, 462060), (51, 425820), (60, 361947), (68, 319365), (85, 255492), (90, 241298), (94, 231030), (102, 212910), (141, 154020), (151, 143820), (153, 141940), (170, 127746), (180, 120649), (188, 115515), (204, 106455), (235, 92412), (255, 85164), (282, 77010), (302, 71910), (306, 70970), (340, 63873), (423, 51340), (453, 47940), (470, 46206), (510, 42582), (564, 38505), (604, 35955), (612, 35485), (705, 30804), (755, 28764), (765, 28388), (799, 27180), (846, 25670), (906, 23970), (940, 23103), (1020, 21291), (1359, 15980), (1410, 15402), (1510, 14382), (1530, 14194), (1598, 13590), (1692, 12835), (1812, 11985), (2115, 10268), (2265, 9588), (2397, 9060), (2567, 8460), (2718, 7990), (2820, 7701), (3020, 7191), (3060, 7097), (3196, 6795), (3995, 5436), (4230, 5134), (4530, 4794)]