21578940

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{449}}^1$

素因数の和:556

約数の個数: 96

約数和(自身を含む): 68040000

約数和(自身を除く): 46461060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 89, 90, 108, 135, 178, 180, 267, 270, 356, 445, 449, 534, 540, 801, 890, 898, 1068, 1335, 1347, 1602, 1780, 1796, 2245, 2403, 2670, 2694, 3204, 4005, 4041, 4490, 4806, 5340, 5388, 6735, 8010, 8082, 8980, 9612, 12015, 12123, 13470, 16020, 16164, 20205, 24030, 24246, 26940, 39961, 40410, 48060, 48492, 60615, 79922, 80820, 119883, 121230, 159844, 199805, 239766, 242460, 359649, 399610, 479532, 599415, 719298, 799220, 1078947, 1198830, 1438596, 1798245, 2157894, 2397660, 3596490, 4315788, 5394735, 7192980, 10789470, 21578940]

約数ペア:

[(1, 21578940), (2, 10789470), (3, 7192980), (4, 5394735), (5, 4315788), (6, 3596490), (9, 2397660), (10, 2157894), (12, 1798245), (15, 1438596), (18, 1198830), (20, 1078947), (27, 799220), (30, 719298), (36, 599415), (45, 479532), (54, 399610), (60, 359649), (89, 242460), (90, 239766), (108, 199805), (135, 159844), (178, 121230), (180, 119883), (267, 80820), (270, 79922), (356, 60615), (445, 48492), (449, 48060), (534, 40410), (540, 39961), (801, 26940), (890, 24246), (898, 24030), (1068, 20205), (1335, 16164), (1347, 16020), (1602, 13470), (1780, 12123), (1796, 12015), (2245, 9612), (2403, 8980), (2670, 8082), (2694, 8010), (3204, 6735), (4005, 5388), (4041, 5340), (4490, 4806)]