1640993380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{293}}^1\times {\mathrm{1657}}^1$

素因数の和:1985

約数の個数: 72

約数和(自身を含む): 3746556072

約数和(自身を除く): 2105562692

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 293, 338, 586, 676, 845, 1172, 1465, 1657, 1690, 2930, 3314, 3380, 3809, 5860, 6628, 7618, 8285, 15236, 16570, 19045, 21541, 33140, 38090, 43082, 49517, 76180, 86164, 99034, 107705, 198068, 215410, 247585, 280033, 430820, 485501, 495170, 560066, 971002, 990340, 1120132, 1400165, 1942004, 2427505, 2800330, 4855010, 5600660, 6311513, 9710020, 12623026, 25246052, 31557565, 63115130, 82049669, 126230260, 164099338, 328198676, 410248345, 820496690, 1640993380]

約数ペア:

[(1, 1640993380), (2, 820496690), (4, 410248345), (5, 328198676), (10, 164099338), (13, 126230260), (20, 82049669), (26, 63115130), (52, 31557565), (65, 25246052), (130, 12623026), (169, 9710020), (260, 6311513), (293, 5600660), (338, 4855010), (586, 2800330), (676, 2427505), (845, 1942004), (1172, 1400165), (1465, 1120132), (1657, 990340), (1690, 971002), (2930, 560066), (3314, 495170), (3380, 485501), (3809, 430820), (5860, 280033), (6628, 247585), (7618, 215410), (8285, 198068), (15236, 107705), (16570, 99034), (19045, 86164), (21541, 76180), (33140, 49517), (38090, 43082)]