20735820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{2351}}^1$

素因数の和:2380

約数の個数: 108

約数和(自身を含む): 73198944

約数和(自身を除く): 52463124

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2205, 2351, 2940, 4410, 4702, 7053, 8820, 9404, 11755, 14106, 16457, 21159, 23510, 28212, 32914, 35265, 42318, 47020, 49371, 65828, 70530, 82285, 84636, 98742, 105795, 115199, 141060, 148113, 164570, 197484, 211590, 230398, 246855, 296226, 329140, 345597, 423180, 460796, 493710, 575995, 592452, 691194, 740565, 987420, 1036791, 1151990, 1382388, 1481130, 1727985, 2073582, 2303980, 2962260, 3455970, 4147164, 5183955, 6911940, 10367910, 20735820]

約数ペア:

[(1, 20735820), (2, 10367910), (3, 6911940), (4, 5183955), (5, 4147164), (6, 3455970), (7, 2962260), (9, 2303980), (10, 2073582), (12, 1727985), (14, 1481130), (15, 1382388), (18, 1151990), (20, 1036791), (21, 987420), (28, 740565), (30, 691194), (35, 592452), (36, 575995), (42, 493710), (45, 460796), (49, 423180), (60, 345597), (63, 329140), (70, 296226), (84, 246855), (90, 230398), (98, 211590), (105, 197484), (126, 164570), (140, 148113), (147, 141060), (180, 115199), (196, 105795), (210, 98742), (245, 84636), (252, 82285), (294, 70530), (315, 65828), (420, 49371), (441, 47020), (490, 42318), (588, 35265), (630, 32914), (735, 28212), (882, 23510), (980, 21159), (1260, 16457), (1470, 14106), (1764, 11755), (2205, 9404), (2351, 8820), (2940, 7053), (4410, 4702)]