19718580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{353}}^1$

素因数の和:398

約数の個数: 144

約数和(自身を含む): 67798080

約数和(自身を除く): 48079500

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 49, 57, 60, 70, 76, 84, 95, 98, 105, 114, 133, 140, 147, 190, 196, 210, 228, 245, 266, 285, 294, 353, 380, 399, 420, 490, 532, 570, 588, 665, 706, 735, 798, 931, 980, 1059, 1140, 1330, 1412, 1470, 1596, 1765, 1862, 1995, 2118, 2471, 2660, 2793, 2940, 3530, 3724, 3990, 4236, 4655, 4942, 5295, 5586, 6707, 7060, 7413, 7980, 9310, 9884, 10590, 11172, 12355, 13414, 13965, 14826, 17297, 18620, 20121, 21180, 24710, 26828, 27930, 29652, 33535, 34594, 37065, 40242, 46949, 49420, 51891, 55860, 67070, 69188, 74130, 80484, 86485, 93898, 100605, 103782, 134140, 140847, 148260, 172970, 187796, 201210, 207564, 234745, 259455, 281694, 328643, 345940, 402420, 469490, 518910, 563388, 657286, 704235, 938980, 985929, 1037820, 1314572, 1408470, 1643215, 1971858, 2816940, 3286430, 3943716, 4929645, 6572860, 9859290, 19718580]

約数ペア:

[(1, 19718580), (2, 9859290), (3, 6572860), (4, 4929645), (5, 3943716), (6, 3286430), (7, 2816940), (10, 1971858), (12, 1643215), (14, 1408470), (15, 1314572), (19, 1037820), (20, 985929), (21, 938980), (28, 704235), (30, 657286), (35, 563388), (38, 518910), (42, 469490), (49, 402420), (57, 345940), (60, 328643), (70, 281694), (76, 259455), (84, 234745), (95, 207564), (98, 201210), (105, 187796), (114, 172970), (133, 148260), (140, 140847), (147, 134140), (190, 103782), (196, 100605), (210, 93898), (228, 86485), (245, 80484), (266, 74130), (285, 69188), (294, 67070), (353, 55860), (380, 51891), (399, 49420), (420, 46949), (490, 40242), (532, 37065), (570, 34594), (588, 33535), (665, 29652), (706, 27930), (735, 26828), (798, 24710), (931, 21180), (980, 20121), (1059, 18620), (1140, 17297), (1330, 14826), (1412, 13965), (1470, 13414), (1596, 12355), (1765, 11172), (1862, 10590), (1995, 9884), (2118, 9310), (2471, 7980), (2660, 7413), (2793, 7060), (2940, 6707), (3530, 5586), (3724, 5295), (3990, 4942), (4236, 4655)]