20784696920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{571}}^1\times {\mathrm{70001}}^1$

素因数の和:70596

約数の個数: 64

約数和(自身を含む): 50451841440

約数和(自身を除く): 29667144520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 571, 1142, 2284, 2855, 4568, 5710, 7423, 11420, 14846, 22840, 29692, 37115, 59384, 70001, 74230, 140002, 148460, 280004, 296920, 350005, 560008, 700010, 910013, 1400020, 1820026, 2800040, 3640052, 4550065, 7280104, 9100130, 18200260, 36400520, 39970571, 79941142, 159882284, 199852855, 319764568, 399705710, 519617423, 799411420, 1039234846, 1598822840, 2078469692, 2598087115, 4156939384, 5196174230, 10392348460, 20784696920]

約数ペア:

[(1, 20784696920), (2, 10392348460), (4, 5196174230), (5, 4156939384), (8, 2598087115), (10, 2078469692), (13, 1598822840), (20, 1039234846), (26, 799411420), (40, 519617423), (52, 399705710), (65, 319764568), (104, 199852855), (130, 159882284), (260, 79941142), (520, 39970571), (571, 36400520), (1142, 18200260), (2284, 9100130), (2855, 7280104), (4568, 4550065), (5710, 3640052), (7423, 2800040), (11420, 1820026), (14846, 1400020), (22840, 910013), (29692, 700010), (37115, 560008), (59384, 350005), (70001, 296920), (74230, 280004), (140002, 148460)]