21405210

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^2$

素因数の和:140

約数の個数: 96

約数和(自身を含む): 58501440

約数和(自身を除く): 37096230

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 19, 30, 34, 38, 47, 51, 57, 85, 94, 95, 102, 114, 141, 170, 190, 235, 255, 282, 285, 323, 470, 510, 570, 646, 705, 799, 893, 969, 1410, 1598, 1615, 1786, 1938, 2209, 2397, 2679, 3230, 3995, 4418, 4465, 4794, 4845, 5358, 6627, 7990, 8930, 9690, 11045, 11985, 13254, 13395, 15181, 22090, 23970, 26790, 30362, 33135, 37553, 41971, 45543, 66270, 75106, 75905, 83942, 91086, 112659, 125913, 151810, 187765, 209855, 225318, 227715, 251826, 375530, 419710, 455430, 563295, 629565, 713507, 1126590, 1259130, 1427014, 2140521, 3567535, 4281042, 7135070, 10702605, 21405210]

約数ペア:

[(1, 21405210), (2, 10702605), (3, 7135070), (5, 4281042), (6, 3567535), (10, 2140521), (15, 1427014), (17, 1259130), (19, 1126590), (30, 713507), (34, 629565), (38, 563295), (47, 455430), (51, 419710), (57, 375530), (85, 251826), (94, 227715), (95, 225318), (102, 209855), (114, 187765), (141, 151810), (170, 125913), (190, 112659), (235, 91086), (255, 83942), (282, 75905), (285, 75106), (323, 66270), (470, 45543), (510, 41971), (570, 37553), (646, 33135), (705, 30362), (799, 26790), (893, 23970), (969, 22090), (1410, 15181), (1598, 13395), (1615, 13254), (1786, 11985), (1938, 11045), (2209, 9690), (2397, 8930), (2679, 7990), (3230, 6627), (3995, 5358), (4418, 4845), (4465, 4794)]