21902220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{449}}^1$

素因数の和:735

約数の個数: 72

約数和(自身を含む): 66830400

約数和(自身を除く): 44928180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 271, 449, 542, 813, 898, 1084, 1347, 1355, 1626, 1796, 2245, 2439, 2694, 2710, 3252, 4041, 4065, 4490, 4878, 5388, 5420, 6735, 8082, 8130, 8980, 9756, 12195, 13470, 16164, 16260, 20205, 24390, 26940, 40410, 48780, 80820, 121679, 243358, 365037, 486716, 608395, 730074, 1095111, 1216790, 1460148, 1825185, 2190222, 2433580, 3650370, 4380444, 5475555, 7300740, 10951110, 21902220]

約数ペア:

[(1, 21902220), (2, 10951110), (3, 7300740), (4, 5475555), (5, 4380444), (6, 3650370), (9, 2433580), (10, 2190222), (12, 1825185), (15, 1460148), (18, 1216790), (20, 1095111), (30, 730074), (36, 608395), (45, 486716), (60, 365037), (90, 243358), (180, 121679), (271, 80820), (449, 48780), (542, 40410), (813, 26940), (898, 24390), (1084, 20205), (1347, 16260), (1355, 16164), (1626, 13470), (1796, 12195), (2245, 9756), (2439, 8980), (2694, 8130), (2710, 8082), (3252, 6735), (4041, 5420), (4065, 5388), (4490, 4878)]