21971430

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:326

約数の個数: 96

約数和(自身を含む): 62506080

約数和(自身を除く): 40534650

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 30, 39, 45, 65, 78, 89, 90, 117, 130, 178, 195, 211, 234, 267, 390, 422, 445, 534, 585, 633, 801, 890, 1055, 1157, 1170, 1266, 1335, 1602, 1899, 2110, 2314, 2670, 2743, 3165, 3471, 3798, 4005, 5486, 5785, 6330, 6942, 8010, 8229, 9495, 10413, 11570, 13715, 16458, 17355, 18779, 18990, 20826, 24687, 27430, 34710, 37558, 41145, 49374, 52065, 56337, 82290, 93895, 104130, 112674, 123435, 169011, 187790, 244127, 246870, 281685, 338022, 488254, 563370, 732381, 845055, 1220635, 1464762, 1690110, 2197143, 2441270, 3661905, 4394286, 7323810, 10985715, 21971430]

約数ペア:

[(1, 21971430), (2, 10985715), (3, 7323810), (5, 4394286), (6, 3661905), (9, 2441270), (10, 2197143), (13, 1690110), (15, 1464762), (18, 1220635), (26, 845055), (30, 732381), (39, 563370), (45, 488254), (65, 338022), (78, 281685), (89, 246870), (90, 244127), (117, 187790), (130, 169011), (178, 123435), (195, 112674), (211, 104130), (234, 93895), (267, 82290), (390, 56337), (422, 52065), (445, 49374), (534, 41145), (585, 37558), (633, 34710), (801, 27430), (890, 24687), (1055, 20826), (1157, 18990), (1170, 18779), (1266, 17355), (1335, 16458), (1602, 13715), (1899, 11570), (2110, 10413), (2314, 9495), (2670, 8229), (2743, 8010), (3165, 6942), (3471, 6330), (3798, 5785), (4005, 5486)]