19890675

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{173}}^1$

素因数の和:269

約数の個数: 72

約数和(自身を含む): 41512224

約数和(自身を除く): 21621549

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 73, 75, 105, 173, 175, 219, 225, 315, 365, 511, 519, 525, 657, 865, 1095, 1211, 1533, 1557, 1575, 1825, 2555, 2595, 3285, 3633, 4325, 4599, 5475, 6055, 7665, 7785, 10899, 12629, 12775, 12975, 16425, 18165, 22995, 30275, 37887, 38325, 38925, 54495, 63145, 88403, 90825, 113661, 114975, 189435, 265209, 272475, 315725, 442015, 568305, 795627, 947175, 1326045, 2210075, 2841525, 3978135, 6630225, 19890675]

約数ペア:

[(1, 19890675), (3, 6630225), (5, 3978135), (7, 2841525), (9, 2210075), (15, 1326045), (21, 947175), (25, 795627), (35, 568305), (45, 442015), (63, 315725), (73, 272475), (75, 265209), (105, 189435), (173, 114975), (175, 113661), (219, 90825), (225, 88403), (315, 63145), (365, 54495), (511, 38925), (519, 38325), (525, 37887), (657, 30275), (865, 22995), (1095, 18165), (1211, 16425), (1533, 12975), (1557, 12775), (1575, 12629), (1825, 10899), (2555, 7785), (2595, 7665), (3285, 6055), (3633, 5475), (4325, 4599)]