25156780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{2789}}^1$

素因数の和:2850

約数の個数: 48

約数和(自身を含む): 59058720

約数和(自身を除く): 33901940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 410, 451, 820, 902, 1804, 2255, 2789, 4510, 5578, 9020, 11156, 13945, 27890, 30679, 55780, 61358, 114349, 122716, 153395, 228698, 306790, 457396, 571745, 613580, 1143490, 1257839, 2286980, 2515678, 5031356, 6289195, 12578390, 25156780]

約数ペア:

[(1, 25156780), (2, 12578390), (4, 6289195), (5, 5031356), (10, 2515678), (11, 2286980), (20, 1257839), (22, 1143490), (41, 613580), (44, 571745), (55, 457396), (82, 306790), (110, 228698), (164, 153395), (205, 122716), (220, 114349), (410, 61358), (451, 55780), (820, 30679), (902, 27890), (1804, 13945), (2255, 11156), (2789, 9020), (4510, 5578)]