20938860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1907}}^1$

素因数の和:1983

約数の個数: 72

約数和(自身を含む): 64589616

約数和(自身を除く): 43650756

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 61, 90, 122, 180, 183, 244, 305, 366, 549, 610, 732, 915, 1098, 1220, 1830, 1907, 2196, 2745, 3660, 3814, 5490, 5721, 7628, 9535, 10980, 11442, 17163, 19070, 22884, 28605, 34326, 38140, 57210, 68652, 85815, 114420, 116327, 171630, 232654, 343260, 348981, 465308, 581635, 697962, 1046943, 1163270, 1395924, 1744905, 2093886, 2326540, 3489810, 4187772, 5234715, 6979620, 10469430, 20938860]

約数ペア:

[(1, 20938860), (2, 10469430), (3, 6979620), (4, 5234715), (5, 4187772), (6, 3489810), (9, 2326540), (10, 2093886), (12, 1744905), (15, 1395924), (18, 1163270), (20, 1046943), (30, 697962), (36, 581635), (45, 465308), (60, 348981), (61, 343260), (90, 232654), (122, 171630), (180, 116327), (183, 114420), (244, 85815), (305, 68652), (366, 57210), (549, 38140), (610, 34326), (732, 28605), (915, 22884), (1098, 19070), (1220, 17163), (1830, 11442), (1907, 10980), (2196, 9535), (2745, 7628), (3660, 5721), (3814, 5490)]