20306820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{379}}^1$

素因数の和:457

約数の個数: 96

約数和(自身を含む): 61286400

約数和(自身を除く): 40979580

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 47, 57, 60, 76, 94, 95, 114, 141, 188, 190, 228, 235, 282, 285, 379, 380, 470, 564, 570, 705, 758, 893, 940, 1137, 1140, 1410, 1516, 1786, 1895, 2274, 2679, 2820, 3572, 3790, 4465, 4548, 5358, 5685, 7201, 7580, 8930, 10716, 11370, 13395, 14402, 17813, 17860, 21603, 22740, 26790, 28804, 35626, 36005, 43206, 53439, 53580, 71252, 72010, 86412, 89065, 106878, 108015, 144020, 178130, 213756, 216030, 267195, 338447, 356260, 432060, 534390, 676894, 1015341, 1068780, 1353788, 1692235, 2030682, 3384470, 4061364, 5076705, 6768940, 10153410, 20306820]

約数ペア:

[(1, 20306820), (2, 10153410), (3, 6768940), (4, 5076705), (5, 4061364), (6, 3384470), (10, 2030682), (12, 1692235), (15, 1353788), (19, 1068780), (20, 1015341), (30, 676894), (38, 534390), (47, 432060), (57, 356260), (60, 338447), (76, 267195), (94, 216030), (95, 213756), (114, 178130), (141, 144020), (188, 108015), (190, 106878), (228, 89065), (235, 86412), (282, 72010), (285, 71252), (379, 53580), (380, 53439), (470, 43206), (564, 36005), (570, 35626), (705, 28804), (758, 26790), (893, 22740), (940, 21603), (1137, 17860), (1140, 17813), (1410, 14402), (1516, 13395), (1786, 11370), (1895, 10716), (2274, 8930), (2679, 7580), (2820, 7201), (3572, 5685), (3790, 5358), (4465, 4548)]