21515970

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{3533}}^1$

素因数の和:3579

約数の個数: 64

約数和(自身を含む): 61067520

約数和(自身を除く): 39551550

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 29, 30, 35, 42, 58, 70, 87, 105, 145, 174, 203, 210, 290, 406, 435, 609, 870, 1015, 1218, 2030, 3045, 3533, 6090, 7066, 10599, 17665, 21198, 24731, 35330, 49462, 52995, 74193, 102457, 105990, 123655, 148386, 204914, 247310, 307371, 370965, 512285, 614742, 717199, 741930, 1024570, 1434398, 1536855, 2151597, 3073710, 3585995, 4303194, 7171990, 10757985, 21515970]

約数ペア:

[(1, 21515970), (2, 10757985), (3, 7171990), (5, 4303194), (6, 3585995), (7, 3073710), (10, 2151597), (14, 1536855), (15, 1434398), (21, 1024570), (29, 741930), (30, 717199), (35, 614742), (42, 512285), (58, 370965), (70, 307371), (87, 247310), (105, 204914), (145, 148386), (174, 123655), (203, 105990), (210, 102457), (290, 74193), (406, 52995), (435, 49462), (609, 35330), (870, 24731), (1015, 21198), (1218, 17665), (2030, 10599), (3045, 7066), (3533, 6090)]