21116394

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:164

約数の個数: 96

約数和(自身を含む): 52835328

約数和(自身を除く): 31718934

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 31, 39, 41, 62, 71, 78, 82, 93, 117, 123, 142, 186, 213, 234, 246, 279, 369, 403, 426, 533, 558, 639, 738, 806, 923, 1066, 1209, 1271, 1278, 1599, 1846, 2201, 2418, 2542, 2769, 2911, 3198, 3627, 3813, 4402, 4797, 5538, 5822, 6603, 7254, 7626, 8307, 8733, 9594, 11439, 13206, 16523, 16614, 17466, 19809, 22878, 26199, 28613, 33046, 37843, 39618, 49569, 52398, 57226, 75686, 85839, 90241, 99138, 113529, 148707, 171678, 180482, 227058, 257517, 270723, 297414, 340587, 515034, 541446, 681174, 812169, 1173133, 1624338, 2346266, 3519399, 7038798, 10558197, 21116394]

約数ペア:

[(1, 21116394), (2, 10558197), (3, 7038798), (6, 3519399), (9, 2346266), (13, 1624338), (18, 1173133), (26, 812169), (31, 681174), (39, 541446), (41, 515034), (62, 340587), (71, 297414), (78, 270723), (82, 257517), (93, 227058), (117, 180482), (123, 171678), (142, 148707), (186, 113529), (213, 99138), (234, 90241), (246, 85839), (279, 75686), (369, 57226), (403, 52398), (426, 49569), (533, 39618), (558, 37843), (639, 33046), (738, 28613), (806, 26199), (923, 22878), (1066, 19809), (1209, 17466), (1271, 16614), (1278, 16523), (1599, 13206), (1846, 11439), (2201, 9594), (2418, 8733), (2542, 8307), (2769, 7626), (2911, 7254), (3198, 6603), (3627, 5822), (3813, 5538), (4402, 4797)]