21512940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{167}}^1$

素因数の和:311

約数の個数: 96

約数和(自身を含む): 64350720

約数和(自身を除く): 42837780

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 113, 114, 167, 190, 226, 228, 285, 334, 339, 380, 452, 501, 565, 570, 668, 678, 835, 1002, 1130, 1140, 1356, 1670, 1695, 2004, 2147, 2260, 2505, 3173, 3340, 3390, 4294, 5010, 6346, 6441, 6780, 8588, 9519, 10020, 10735, 12692, 12882, 15865, 18871, 19038, 21470, 25764, 31730, 32205, 37742, 38076, 42940, 47595, 56613, 63460, 64410, 75484, 94355, 95190, 113226, 128820, 188710, 190380, 226452, 283065, 358549, 377420, 566130, 717098, 1075647, 1132260, 1434196, 1792745, 2151294, 3585490, 4302588, 5378235, 7170980, 10756470, 21512940]

約数ペア:

[(1, 21512940), (2, 10756470), (3, 7170980), (4, 5378235), (5, 4302588), (6, 3585490), (10, 2151294), (12, 1792745), (15, 1434196), (19, 1132260), (20, 1075647), (30, 717098), (38, 566130), (57, 377420), (60, 358549), (76, 283065), (95, 226452), (113, 190380), (114, 188710), (167, 128820), (190, 113226), (226, 95190), (228, 94355), (285, 75484), (334, 64410), (339, 63460), (380, 56613), (452, 47595), (501, 42940), (565, 38076), (570, 37742), (668, 32205), (678, 31730), (835, 25764), (1002, 21470), (1130, 19038), (1140, 18871), (1356, 15865), (1670, 12882), (1695, 12692), (2004, 10735), (2147, 10020), (2260, 9519), (2505, 8588), (3173, 6780), (3340, 6441), (3390, 6346), (4294, 5010)]