81458580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{269}}^1$

素因数の和:398

約数の個数: 144

約数和(自身を含む): 268894080

約数和(自身を除く): 187435500

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 103, 105, 140, 147, 196, 206, 210, 245, 269, 294, 309, 412, 420, 490, 515, 538, 588, 618, 721, 735, 807, 980, 1030, 1076, 1236, 1345, 1442, 1470, 1545, 1614, 1883, 2060, 2163, 2690, 2884, 2940, 3090, 3228, 3605, 3766, 4035, 4326, 5047, 5380, 5649, 6180, 7210, 7532, 8070, 8652, 9415, 10094, 10815, 11298, 13181, 14420, 15141, 16140, 18830, 20188, 21630, 22596, 25235, 26362, 27707, 28245, 30282, 37660, 39543, 43260, 50470, 52724, 55414, 56490, 60564, 65905, 75705, 79086, 83121, 100940, 110828, 112980, 131810, 138535, 151410, 158172, 166242, 193949, 197715, 263620, 277070, 302820, 332484, 387898, 395430, 415605, 554140, 581847, 775796, 790860, 831210, 969745, 1163694, 1357643, 1662420, 1939490, 2327388, 2715286, 2909235, 3878980, 4072929, 5430572, 5818470, 6788215, 8145858, 11636940, 13576430, 16291716, 20364645, 27152860, 40729290, 81458580]

約数ペア:

[(1, 81458580), (2, 40729290), (3, 27152860), (4, 20364645), (5, 16291716), (6, 13576430), (7, 11636940), (10, 8145858), (12, 6788215), (14, 5818470), (15, 5430572), (20, 4072929), (21, 3878980), (28, 2909235), (30, 2715286), (35, 2327388), (42, 1939490), (49, 1662420), (60, 1357643), (70, 1163694), (84, 969745), (98, 831210), (103, 790860), (105, 775796), (140, 581847), (147, 554140), (196, 415605), (206, 395430), (210, 387898), (245, 332484), (269, 302820), (294, 277070), (309, 263620), (412, 197715), (420, 193949), (490, 166242), (515, 158172), (538, 151410), (588, 138535), (618, 131810), (721, 112980), (735, 110828), (807, 100940), (980, 83121), (1030, 79086), (1076, 75705), (1236, 65905), (1345, 60564), (1442, 56490), (1470, 55414), (1545, 52724), (1614, 50470), (1883, 43260), (2060, 39543), (2163, 37660), (2690, 30282), (2884, 28245), (2940, 27707), (3090, 26362), (3228, 25235), (3605, 22596), (3766, 21630), (4035, 20188), (4326, 18830), (5047, 16140), (5380, 15141), (5649, 14420), (6180, 13181), (7210, 11298), (7532, 10815), (8070, 10094), (8652, 9415)]