21316365

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1$

素因数の和:200

約数の個数: 80

約数和(自身を含む): 44698368

約数和(自身を除く): 23382003

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 73, 81, 103, 105, 135, 189, 219, 309, 315, 365, 405, 511, 515, 567, 657, 721, 927, 945, 1095, 1533, 1545, 1971, 2163, 2555, 2781, 2835, 3285, 3605, 4599, 4635, 5913, 6489, 7519, 7665, 8343, 9855, 10815, 13797, 13905, 19467, 22557, 22995, 29565, 32445, 37595, 41391, 41715, 52633, 58401, 67671, 68985, 97335, 112785, 157899, 203013, 206955, 263165, 292005, 338355, 473697, 609039, 789495, 1015065, 1421091, 2368485, 3045195, 4263273, 7105455, 21316365]

約数ペア:

[(1, 21316365), (3, 7105455), (5, 4263273), (7, 3045195), (9, 2368485), (15, 1421091), (21, 1015065), (27, 789495), (35, 609039), (45, 473697), (63, 338355), (73, 292005), (81, 263165), (103, 206955), (105, 203013), (135, 157899), (189, 112785), (219, 97335), (309, 68985), (315, 67671), (365, 58401), (405, 52633), (511, 41715), (515, 41391), (567, 37595), (657, 32445), (721, 29565), (927, 22995), (945, 22557), (1095, 19467), (1533, 13905), (1545, 13797), (1971, 10815), (2163, 9855), (2555, 8343), (2781, 7665), (2835, 7519), (3285, 6489), (3605, 5913), (4599, 4635)]