28262988

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{461}}^1$

素因数の和:615

約数の個数: 72

約数和(自身を含む): 77693616

約数和(自身を除く): 49430628

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 131, 156, 234, 262, 393, 461, 468, 524, 786, 922, 1179, 1383, 1572, 1703, 1844, 2358, 2766, 3406, 4149, 4716, 5109, 5532, 5993, 6812, 8298, 10218, 11986, 15327, 16596, 17979, 20436, 23972, 30654, 35958, 53937, 60391, 61308, 71916, 107874, 120782, 181173, 215748, 241564, 362346, 543519, 724692, 785083, 1087038, 1570166, 2174076, 2355249, 3140332, 4710498, 7065747, 9420996, 14131494, 28262988]

約数ペア:

[(1, 28262988), (2, 14131494), (3, 9420996), (4, 7065747), (6, 4710498), (9, 3140332), (12, 2355249), (13, 2174076), (18, 1570166), (26, 1087038), (36, 785083), (39, 724692), (52, 543519), (78, 362346), (117, 241564), (131, 215748), (156, 181173), (234, 120782), (262, 107874), (393, 71916), (461, 61308), (468, 60391), (524, 53937), (786, 35958), (922, 30654), (1179, 23972), (1383, 20436), (1572, 17979), (1703, 16596), (1844, 15327), (2358, 11986), (2766, 10218), (3406, 8298), (4149, 6812), (4716, 5993), (5109, 5532)]