28797730

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:259

約数の個数: 64

約数和(自身を含む): 59875200

約数和(自身を除く): 31077470

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 89, 95, 130, 131, 178, 190, 247, 262, 445, 494, 655, 890, 1157, 1235, 1310, 1691, 1703, 2314, 2470, 2489, 3382, 3406, 4978, 5785, 8455, 8515, 11570, 11659, 12445, 16910, 17030, 21983, 23318, 24890, 32357, 43966, 58295, 64714, 109915, 116590, 151567, 161785, 219830, 221521, 303134, 323570, 443042, 757835, 1107605, 1515670, 2215210, 2879773, 5759546, 14398865, 28797730]

約数ペア:

[(1, 28797730), (2, 14398865), (5, 5759546), (10, 2879773), (13, 2215210), (19, 1515670), (26, 1107605), (38, 757835), (65, 443042), (89, 323570), (95, 303134), (130, 221521), (131, 219830), (178, 161785), (190, 151567), (247, 116590), (262, 109915), (445, 64714), (494, 58295), (655, 43966), (890, 32357), (1157, 24890), (1235, 23318), (1310, 21983), (1691, 17030), (1703, 16910), (2314, 12445), (2470, 11659), (2489, 11570), (3382, 8515), (3406, 8455), (4978, 5785)]