19665180

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1$

素因数の和:281

約数の個数: 120

約数和(自身を含む): 63016800

約数和(自身を除く): 43351620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 61, 81, 90, 108, 122, 135, 162, 180, 183, 199, 244, 270, 305, 324, 366, 398, 405, 540, 549, 597, 610, 732, 796, 810, 915, 995, 1098, 1194, 1220, 1620, 1647, 1791, 1830, 1990, 2196, 2388, 2745, 2985, 3294, 3582, 3660, 3980, 4941, 5373, 5490, 5970, 6588, 7164, 8235, 8955, 9882, 10746, 10980, 11940, 12139, 16119, 16470, 17910, 19764, 21492, 24278, 24705, 26865, 32238, 32940, 35820, 36417, 48556, 49410, 53730, 60695, 64476, 72834, 80595, 98820, 107460, 109251, 121390, 145668, 161190, 182085, 218502, 242780, 322380, 327753, 364170, 437004, 546255, 655506, 728340, 983259, 1092510, 1311012, 1638765, 1966518, 2185020, 3277530, 3933036, 4916295, 6555060, 9832590, 19665180]

約数ペア:

[(1, 19665180), (2, 9832590), (3, 6555060), (4, 4916295), (5, 3933036), (6, 3277530), (9, 2185020), (10, 1966518), (12, 1638765), (15, 1311012), (18, 1092510), (20, 983259), (27, 728340), (30, 655506), (36, 546255), (45, 437004), (54, 364170), (60, 327753), (61, 322380), (81, 242780), (90, 218502), (108, 182085), (122, 161190), (135, 145668), (162, 121390), (180, 109251), (183, 107460), (199, 98820), (244, 80595), (270, 72834), (305, 64476), (324, 60695), (366, 53730), (398, 49410), (405, 48556), (540, 36417), (549, 35820), (597, 32940), (610, 32238), (732, 26865), (796, 24705), (810, 24278), (915, 21492), (995, 19764), (1098, 17910), (1194, 16470), (1220, 16119), (1620, 12139), (1647, 11940), (1791, 10980), (1830, 10746), (1990, 9882), (2196, 8955), (2388, 8235), (2745, 7164), (2985, 6588), (3294, 5970), (3582, 5490), (3660, 5373), (3980, 4941)]