19509980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1$

素因数の和:195

約数の個数: 96

約数和(自身を含む): 50125824

約数和(自身を除く): 30615844

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 73, 83, 92, 115, 140, 146, 161, 166, 230, 292, 322, 332, 365, 415, 460, 511, 581, 644, 730, 805, 830, 1022, 1162, 1460, 1610, 1660, 1679, 1909, 2044, 2324, 2555, 2905, 3220, 3358, 3818, 5110, 5810, 6059, 6716, 7636, 8395, 9545, 10220, 11620, 11753, 12118, 13363, 16790, 19090, 23506, 24236, 26726, 30295, 33580, 38180, 42413, 47012, 53452, 58765, 60590, 66815, 84826, 117530, 121180, 133630, 139357, 169652, 212065, 235060, 267260, 278714, 424130, 557428, 696785, 848260, 975499, 1393570, 1950998, 2787140, 3901996, 4877495, 9754990, 19509980]

約数ペア:

[(1, 19509980), (2, 9754990), (4, 4877495), (5, 3901996), (7, 2787140), (10, 1950998), (14, 1393570), (20, 975499), (23, 848260), (28, 696785), (35, 557428), (46, 424130), (70, 278714), (73, 267260), (83, 235060), (92, 212065), (115, 169652), (140, 139357), (146, 133630), (161, 121180), (166, 117530), (230, 84826), (292, 66815), (322, 60590), (332, 58765), (365, 53452), (415, 47012), (460, 42413), (511, 38180), (581, 33580), (644, 30295), (730, 26726), (805, 24236), (830, 23506), (1022, 19090), (1162, 16790), (1460, 13363), (1610, 12118), (1660, 11753), (1679, 11620), (1909, 10220), (2044, 9545), (2324, 8395), (2555, 7636), (2905, 6716), (3220, 6059), (3358, 5810), (3818, 5110)]