19964460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^2\times {\mathrm{37}}^1$

素因数の和:112

約数の個数: 144

約数和(自身を含む): 63546336

約数和(自身を除く): 43581876

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 23, 30, 34, 37, 46, 51, 60, 68, 69, 74, 85, 92, 102, 111, 115, 138, 148, 170, 185, 204, 222, 230, 255, 276, 340, 345, 370, 391, 444, 460, 510, 529, 555, 629, 690, 740, 782, 851, 1020, 1058, 1110, 1173, 1258, 1380, 1564, 1587, 1702, 1887, 1955, 2116, 2220, 2346, 2516, 2553, 2645, 3145, 3174, 3404, 3774, 3910, 4255, 4692, 5106, 5290, 5865, 6290, 6348, 7548, 7820, 7935, 8510, 8993, 9435, 10212, 10580, 11730, 12580, 12765, 14467, 15870, 17020, 17986, 18870, 19573, 23460, 25530, 26979, 28934, 31740, 35972, 37740, 39146, 43401, 44965, 51060, 53958, 57868, 58719, 72335, 78292, 86802, 89930, 97865, 107916, 117438, 134895, 144670, 173604, 179860, 195730, 217005, 234876, 269790, 289340, 293595, 332741, 391460, 434010, 539580, 587190, 665482, 868020, 998223, 1174380, 1330964, 1663705, 1996446, 3327410, 3992892, 4991115, 6654820, 9982230, 19964460]

約数ペア:

[(1, 19964460), (2, 9982230), (3, 6654820), (4, 4991115), (5, 3992892), (6, 3327410), (10, 1996446), (12, 1663705), (15, 1330964), (17, 1174380), (20, 998223), (23, 868020), (30, 665482), (34, 587190), (37, 539580), (46, 434010), (51, 391460), (60, 332741), (68, 293595), (69, 289340), (74, 269790), (85, 234876), (92, 217005), (102, 195730), (111, 179860), (115, 173604), (138, 144670), (148, 134895), (170, 117438), (185, 107916), (204, 97865), (222, 89930), (230, 86802), (255, 78292), (276, 72335), (340, 58719), (345, 57868), (370, 53958), (391, 51060), (444, 44965), (460, 43401), (510, 39146), (529, 37740), (555, 35972), (629, 31740), (690, 28934), (740, 26979), (782, 25530), (851, 23460), (1020, 19573), (1058, 18870), (1110, 17986), (1173, 17020), (1258, 15870), (1380, 14467), (1564, 12765), (1587, 12580), (1702, 11730), (1887, 10580), (1955, 10212), (2116, 9435), (2220, 8993), (2346, 8510), (2516, 7935), (2553, 7820), (2645, 7548), (3145, 6348), (3174, 6290), (3404, 5865), (3774, 5290), (3910, 5106), (4255, 4692)]