21634540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{197}}^1$

素因数の和:259

約数の個数: 72

約数和(自身を含む): 51060240

約数和(自身を除く): 29425700

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 197, 289, 323, 340, 380, 394, 578, 646, 788, 985, 1156, 1292, 1445, 1615, 1970, 2890, 3230, 3349, 3743, 3940, 5491, 5780, 6460, 6698, 7486, 10982, 13396, 14972, 16745, 18715, 21964, 27455, 33490, 37430, 54910, 56933, 63631, 66980, 74860, 109820, 113866, 127262, 227732, 254524, 284665, 318155, 569330, 636310, 1081727, 1138660, 1272620, 2163454, 4326908, 5408635, 10817270, 21634540]

約数ペア:

[(1, 21634540), (2, 10817270), (4, 5408635), (5, 4326908), (10, 2163454), (17, 1272620), (19, 1138660), (20, 1081727), (34, 636310), (38, 569330), (68, 318155), (76, 284665), (85, 254524), (95, 227732), (170, 127262), (190, 113866), (197, 109820), (289, 74860), (323, 66980), (340, 63631), (380, 56933), (394, 54910), (578, 37430), (646, 33490), (788, 27455), (985, 21964), (1156, 18715), (1292, 16745), (1445, 14972), (1615, 13396), (1970, 10982), (2890, 7486), (3230, 6698), (3349, 6460), (3743, 5780), (3940, 5491)]