28438695

素因数分解:

$3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:154

約数の個数: 80

約数和(自身を含む): 55199232

約数和(自身を除く): 26760537

約数列:

[1, 3, 5, 9, 15, 23, 27, 43, 45, 69, 71, 81, 115, 129, 135, 207, 213, 215, 345, 355, 387, 405, 621, 639, 645, 989, 1035, 1065, 1161, 1633, 1863, 1917, 1935, 2967, 3053, 3105, 3195, 3483, 4899, 4945, 5751, 5805, 8165, 8901, 9159, 9315, 9585, 14697, 14835, 15265, 17415, 24495, 26703, 27477, 28755, 44091, 44505, 45795, 70219, 73485, 80109, 82431, 132273, 133515, 137385, 210657, 220455, 247293, 351095, 400545, 412155, 631971, 661365, 1053285, 1236465, 1895913, 3159855, 5687739, 9479565, 28438695]

約数ペア:

[(1, 28438695), (3, 9479565), (5, 5687739), (9, 3159855), (15, 1895913), (23, 1236465), (27, 1053285), (43, 661365), (45, 631971), (69, 412155), (71, 400545), (81, 351095), (115, 247293), (129, 220455), (135, 210657), (207, 137385), (213, 133515), (215, 132273), (345, 82431), (355, 80109), (387, 73485), (405, 70219), (621, 45795), (639, 44505), (645, 44091), (989, 28755), (1035, 27477), (1065, 26703), (1161, 24495), (1633, 17415), (1863, 15265), (1917, 14835), (1935, 14697), (2967, 9585), (3053, 9315), (3105, 9159), (3195, 8901), (3483, 8165), (4899, 5805), (4945, 5751)]