28878763940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{541}}^1\times {\mathrm{929}}^1$

素因数の和:1522

約数の個数: 144

約数和(自身を含む): 69735692880

約数和(自身を除く): 40856928940

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 169, 170, 221, 260, 338, 340, 442, 541, 676, 845, 884, 929, 1082, 1105, 1690, 1858, 2164, 2210, 2705, 2873, 3380, 3716, 4420, 4645, 5410, 5746, 7033, 9197, 9290, 10820, 11492, 12077, 14066, 14365, 15793, 18394, 18580, 24154, 28132, 28730, 31586, 35165, 36788, 45985, 48308, 57460, 60385, 63172, 70330, 78965, 91429, 91970, 119561, 120770, 140660, 157001, 157930, 182858, 183940, 205309, 239122, 241540, 314002, 315860, 365716, 410618, 457145, 478244, 502589, 597805, 628004, 785005, 821236, 914290, 1005178, 1026545, 1195610, 1554293, 1570010, 1828580, 2010356, 2053090, 2391220, 2512945, 2669017, 3108586, 3140020, 4106180, 5025890, 5338034, 6217172, 6533657, 7771465, 8544013, 10051780, 10676068, 13067314, 13345085, 15542930, 17088026, 26134628, 26690170, 31085860, 32668285, 34176052, 42720065, 53380340, 65336570, 84937541, 85440130, 111072169, 130673140, 169875082, 170880260, 222144338, 339750164, 424687705, 444288676, 555360845, 849375410, 1110721690, 1443938197, 1698750820, 2221443380, 2887876394, 5775752788, 7219690985, 14439381970, 28878763940]

約数ペア:

[(1, 28878763940), (2, 14439381970), (4, 7219690985), (5, 5775752788), (10, 2887876394), (13, 2221443380), (17, 1698750820), (20, 1443938197), (26, 1110721690), (34, 849375410), (52, 555360845), (65, 444288676), (68, 424687705), (85, 339750164), (130, 222144338), (169, 170880260), (170, 169875082), (221, 130673140), (260, 111072169), (338, 85440130), (340, 84937541), (442, 65336570), (541, 53380340), (676, 42720065), (845, 34176052), (884, 32668285), (929, 31085860), (1082, 26690170), (1105, 26134628), (1690, 17088026), (1858, 15542930), (2164, 13345085), (2210, 13067314), (2705, 10676068), (2873, 10051780), (3380, 8544013), (3716, 7771465), (4420, 6533657), (4645, 6217172), (5410, 5338034), (5746, 5025890), (7033, 4106180), (9197, 3140020), (9290, 3108586), (10820, 2669017), (11492, 2512945), (12077, 2391220), (14066, 2053090), (14365, 2010356), (15793, 1828580), (18394, 1570010), (18580, 1554293), (24154, 1195610), (28132, 1026545), (28730, 1005178), (31586, 914290), (35165, 821236), (36788, 785005), (45985, 628004), (48308, 597805), (57460, 502589), (60385, 478244), (63172, 457145), (70330, 410618), (78965, 365716), (91429, 315860), (91970, 314002), (119561, 241540), (120770, 239122), (140660, 205309), (157001, 183940), (157930, 182858)]