21458220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2689}}^1$

素因数の和:2727

約数の個数: 96

約数和(自身を含む): 72307200

約数和(自身を除く): 50848980

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 57, 60, 70, 76, 84, 95, 105, 114, 133, 140, 190, 210, 228, 266, 285, 380, 399, 420, 532, 570, 665, 798, 1140, 1330, 1596, 1995, 2660, 2689, 3990, 5378, 7980, 8067, 10756, 13445, 16134, 18823, 26890, 32268, 37646, 40335, 51091, 53780, 56469, 75292, 80670, 94115, 102182, 112938, 153273, 161340, 188230, 204364, 225876, 255455, 282345, 306546, 357637, 376460, 510910, 564690, 613092, 715274, 766365, 1021820, 1072911, 1129380, 1430548, 1532730, 1788185, 2145822, 3065460, 3576370, 4291644, 5364555, 7152740, 10729110, 21458220]

約数ペア:

[(1, 21458220), (2, 10729110), (3, 7152740), (4, 5364555), (5, 4291644), (6, 3576370), (7, 3065460), (10, 2145822), (12, 1788185), (14, 1532730), (15, 1430548), (19, 1129380), (20, 1072911), (21, 1021820), (28, 766365), (30, 715274), (35, 613092), (38, 564690), (42, 510910), (57, 376460), (60, 357637), (70, 306546), (76, 282345), (84, 255455), (95, 225876), (105, 204364), (114, 188230), (133, 161340), (140, 153273), (190, 112938), (210, 102182), (228, 94115), (266, 80670), (285, 75292), (380, 56469), (399, 53780), (420, 51091), (532, 40335), (570, 37646), (665, 32268), (798, 26890), (1140, 18823), (1330, 16134), (1596, 13445), (1995, 10756), (2660, 8067), (2689, 7980), (3990, 5378)]