20821920

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{6197}}^1$

素因数の和:6222

約数の個数: 96

約数和(自身を含む): 74971008

約数和(自身を除く): 54149088

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 70, 80, 84, 96, 105, 112, 120, 140, 160, 168, 210, 224, 240, 280, 336, 420, 480, 560, 672, 840, 1120, 1680, 3360, 6197, 12394, 18591, 24788, 30985, 37182, 43379, 49576, 61970, 74364, 86758, 92955, 99152, 123940, 130137, 148728, 173516, 185910, 198304, 216895, 247880, 260274, 297456, 347032, 371820, 433790, 495760, 520548, 594912, 650685, 694064, 743640, 867580, 991520, 1041096, 1301370, 1388128, 1487280, 1735160, 2082192, 2602740, 2974560, 3470320, 4164384, 5205480, 6940640, 10410960, 20821920]

約数ペア:

[(1, 20821920), (2, 10410960), (3, 6940640), (4, 5205480), (5, 4164384), (6, 3470320), (7, 2974560), (8, 2602740), (10, 2082192), (12, 1735160), (14, 1487280), (15, 1388128), (16, 1301370), (20, 1041096), (21, 991520), (24, 867580), (28, 743640), (30, 694064), (32, 650685), (35, 594912), (40, 520548), (42, 495760), (48, 433790), (56, 371820), (60, 347032), (70, 297456), (80, 260274), (84, 247880), (96, 216895), (105, 198304), (112, 185910), (120, 173516), (140, 148728), (160, 130137), (168, 123940), (210, 99152), (224, 92955), (240, 86758), (280, 74364), (336, 61970), (420, 49576), (480, 43379), (560, 37182), (672, 30985), (840, 24788), (1120, 18591), (1680, 12394), (3360, 6197)]