21391650

素因数分解:

$2^1\times 3^2\times 5^2\times 7^1\times {\mathrm{6791}}^1$

素因数の和:6816

約数の個数: 72

約数和(自身を含む): 65692224

約数和(自身を除く): 44300574

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 25, 30, 35, 42, 45, 50, 63, 70, 75, 90, 105, 126, 150, 175, 210, 225, 315, 350, 450, 525, 630, 1050, 1575, 3150, 6791, 13582, 20373, 33955, 40746, 47537, 61119, 67910, 95074, 101865, 122238, 142611, 169775, 203730, 237685, 285222, 305595, 339550, 427833, 475370, 509325, 611190, 713055, 855666, 1018650, 1188425, 1426110, 1527975, 2139165, 2376850, 3055950, 3565275, 4278330, 7130550, 10695825, 21391650]

約数ペア:

[(1, 21391650), (2, 10695825), (3, 7130550), (5, 4278330), (6, 3565275), (7, 3055950), (9, 2376850), (10, 2139165), (14, 1527975), (15, 1426110), (18, 1188425), (21, 1018650), (25, 855666), (30, 713055), (35, 611190), (42, 509325), (45, 475370), (50, 427833), (63, 339550), (70, 305595), (75, 285222), (90, 237685), (105, 203730), (126, 169775), (150, 142611), (175, 122238), (210, 101865), (225, 95074), (315, 67910), (350, 61119), (450, 47537), (525, 40746), (630, 33955), (1050, 20373), (1575, 13582), (3150, 6791)]